Manufacturers Index - Trevor & Co.
Trevor & Co.
Lockport, NY, U.S.A.
Manufacturer Class:
Wood Working Machinery
This page contains information on patents issued to this manufacturer.
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11,858
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Oct. 31, 1854
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Shingle machine
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Harry H. Evarts |
Chicago, IL |
The patent was extended for seven years. A few years into the extension, "Application for Reissue, in two divisions, filed January 8, 1874." According to the "Decisions of the Commissioner of Patents" for 1874, the reissue was rejected. There is, however, an AI (Additional Improvements) patent, for making staves.
This patent was litigated in H. H. Evarts et al. vs. David M. Ford, in front of Judge J. Blodgett of the Northern District Court of Illinois, in November 1873. "The third claim of the patent granted H. H. Evarts, October 1, 1854, for improvement in shingle-machines, which is, 'presenting the sides of the fibers of the wood to the action of the saws in the sawing of shingles or equivalent articles, for the purpose of giving them smoother surfaces than can be produced by the usual mode of sawing,' if construed literally, asserts a right to a result, and cannot be sustained. Construed as a claim for the mechanism by which the result is effected, it may be sustained. A patent for a machine in which a shingle-bolt is fastened automatically by dogged teeth upon a rotating carriage, which presents it sidewise to the saw, is not infringed by a machine in which the bolt is by hand fastened to a reciprocating carriage, and by hand shoved to the saw and withdrawn. Evarts having failed to patent his hand-machine, made while experimenting and before taking out his patent on his perfected machine, and having failed to mention or describe it in the specification of the patent he did take out, is held to have abandoned it to the public. The opinion of the Commissioner of Patents, granting an extension, is entitled to great weight on the question of novelty."
Quoting from "Reports of Cases Arising Upon Letters Patent for Invention" by Samuel Sparks Fisher: "It is an ingenious and complete machine for sawing shingles from the block. A block, T (in the engraving represented in broken lines), is placed on each table, P, P'; is seized by dogs, actuated by H, and teeth t' and carried by the saws A, as the cogged rim F revolves. The tables P, P' are so inclined in respect to saws as to give the required taper to the shingle. The lever cams H are rocked on fulcrums in the rim D, by cams n', n', so that two at a time of the dogs i shall pierce the block as it arrives near the saw, or at T, by which time the other two dogs i, which hold the block thus far, are withdrawn; thus but two dogs, together with the teeth t', carry a block around. It must be observed that, to give the proper taper, the beds P, P' slope inward and downward from the saws the angle required. As the block always bears against this bed as it meets the saws, the taper necessarily results. The block is sawed alternately from end to end, giving the thin and thick ends of shingles, alternately from each end of the block. As soon as one shingle is cleared, it drops, and the dogs i, now holding the block, are withdrawn (by cams n', n'), and the block drops a distance equal to the thickness of the shingle just formed on the bed H, and is in the exact position to meet the next saw, just before clearing which, two dogs, i, quickly clamp it, and hold it until past this saw. Thus it may be seen that a block placed on one of the tables, and the machinery being in motion, the machine will convert it into shingles without further manual assistance." |
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19,033
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Jan. 05, 1858
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Shingle machine
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Robert Law |
Portage City, WI |
This patent date was seen on a Trevor shingle machine that also said, "Licensed under Evarts' Patent" and the date January 4, 1872 (patent 11,858). Shingles machines of this patent have even been seen in a 1912 catalog for Trevor Mfg. Co., albeit with the improvements of patents 764,873 and 883,922. We have also see a Goldie & McCulloch shingle machine based on this patent, which was presumably not licensed since American patents were not recognized in Canada. We did find a listing for a Canadian shingle-machine patent granted in 1859 to one James Law of Scarborough, Ontario (932). We have not been able to find a copy of that specification but it might be a Canadian version of this patent: at the time, only residents of Canada could receive Canadian patents, so perhaps Robert Law arranged for a Canadian relative to apply for a patent on his behalf. |
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932
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Mar. 24, 1859
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Law's shingle and barrel heading sawing machine
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James Law |
ON, Canada |
It is possible that this patent is a duplicate of the 1858 US patent granted to Robert Law, 19,033. That patented shingle mill was manufactured for many years by Trevor & Co., of Lockport, NY, and for a few years by Goldie & McCulloch Co., of Galt, ON.
XC patents are Canadian patents issued between 1824 and 1869. |
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47,058
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Mar. 28, 1865
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Desk and Work Table
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Joseph Trevor |
Lockport, Niagara County, NY |
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106,014
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Aug. 02, 1870
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Improvement in stave-jointing machines
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William Widdowson |
Rochester, NY |
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166,041
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Jul. 27, 1875
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Machine for Making Barrel-Heads
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William W. Trevor |
Lockport, Niagara County, NY |
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218,088
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Jul. 29, 1879
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Support for Steam-Radiators
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Francis N. Trevor |
Lockport, Niagara County, NY |
R. F. Osgood, patent attorney
Our improvement relates to means for supporting steam radiators, so that carpets can be readily laid beneath.
Heretofore the radiator has rested upon or in close contact with the floor, and in order to fit the carpet around it the carpet has had to be cut and turned under, thereby injuring the carpet, and making an unsightly enlargement around the radiator. To remedy this difficulty is the object of our invention; and it consists of a support constructed and arranged as hereinafter more fully described.
What we claim as new is:
1. The support A, for steam-radiators, consisting of the head a and horizontally-projecting arms b b, with the cleft or opening between them for receiving a carpet, as herein shown and described.
2. The support A, consisting of the head a and arms b b, provided on top with the lugs d d, to receive the flange at the base of the radiator, as herein shown and described. |
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Support for Steam-Radiators
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Albert J. Evans |
Lockport, Niagara County, NY |
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221,480
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Nov. 11, 1879
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Machine for Cutting Key-Seats
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William W. Trevor |
Lockport, Niagara County, NY |
R. F. Osgood, patent attorney
My improvement relates to key seating or slotting machines, and is designed to do the work in a simpler and more effective manner than in ordinary machines for the purpose.
Having thus described my invention, I claim:
1. In a key seating or slotting machine, the combination of the fixed cotter F, the sliding head E, the adjusting-screws h h', the stiff bar G, attached to the sliding head, and the pivoted box jj provided with a socket which receives the lower end of the bar, as shown and described, and for the purpose specified.
2. In a key seating or slotting machine, the. combination of the fixed cutter F, the sliding head E, the adjusting-screws h h', the stiff bar G, the pivoted box J, the pitman H, crank wheel I, and eccentric gears M M, as shown and described, and for the purpose specified.
3. In a key seating or slotting machine, the combination, with the sliding head E, guide bar G, and pivoted box J, of the adjusting screw, resting in a bearing, ff, and serving to gage the movement of the sliding head in cutting the slot, and the lever L, for pressing the cutter forward to its work, as herein shown and described.
4. In a key seating or slotting machine, the combination, with the sliding head E, guide bar G, and pivoted box J, of the gage-screws hh', as shown and described and for the purpose specified.
5. In a key seating or slotting machine, the combination, with the cotter P, of the lever L, pivoted to the cross-bar K, said lever being provided with a thin edge, which extends down back of the cutter, the whole arranged as described, so that the operator, bearing upon the lever, can exert pressure upon the cutter, as, herein set forth. |
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221,479
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Nov. 11, 1879
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Junction Service-Boxes for Street Steam Mains
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William W. Trevor |
Lockport, Niagara County, NY |
R. F. Osgood, patent attorney
Our improvement relates to street steam pipes laid in cities and towns for heating and other purposes; and it consists in an improved construction of the junction-boxes where the steam is taken from the main into service pipes, as hereinafter more fully described.
Having thus described our invention, what we claim as new is:
1. In a system of street steam-pipes, the combination, with the steam-main A, of the hollow chamber B, surrounding said main, with service-pipes C C opening from said chamber, the main communicating with said chamber by ports at the top or bottom, and valves situated within the chamber for controlling the steam, as described.
2. In. a system of street steam-pipes, the combination, with the main pipe A, of the chamber B, divided into compartments c c g, with ports b bf opening from the main pipe into said compartments, and ports h h opening from the lower into the upper compartments, said ports b b and h h being covered by valves i i and fc fr, as shown and described, and for the purpose specified.
3. In a system of street steam-pipes, the combination of the main pipe A, provided with ports b b and/at its top and bottom, the compartments c c g surrounding said main pipe, and provided with lateral service-pipes G C, and a system of valves, i i and ft fc, arranged in connection with ports b b and h h, to admit the steam from the main pipe to the service-pipes, either through the upper or lower compartments, as herein described.
4. In combination with a steam-main pipe, A A', the inclosing-chamber B, provided with lateral service-pipes C C, and arranged with a diaphragm having valves i je, as shown and described, and for the purpose specified. |
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Junction Service-Boxes for Street Steam Mains
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Francis N. Trevor |
Lockport, Niagara County, NY |
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451,228
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Apr. 28, 1891
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Machine for Splitting Wood
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William W. Trevor |
Lockport, Niagara County, NY |
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517,990
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Apr. 10, 1894
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Machine for Barking Logs
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Francis N. Trevor |
Lockport, Niagara County, NY |
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Machine for Barking Logs
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William W. Trevor |
Lockport, Niagara County, NY |
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531,400
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Dec. 25, 1894
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Machine for Turning Barrel Heads
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William W. Trevor |
Lockport, Niagara County, NY |
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687,413
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Nov. 26, 1901
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Steam Boiler
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William W. Trevor |
Lockport, Niagara County, NY |
Wilhelm & Bonner, patent attorneys
This invention relates more especially to low-pressure boilers which are used mainly for heating buildings by steam or hot water. The main object of our invention is to provide a large fire-space and large heating-surfaces without complicating the construction or greatly increasing the cost of manufacture: and to that end we associate with an upright boiler, which contains the fire-chamber, a secondary return-flue boiler in such manner that the hot products of combustion pass from the primary boiler through the return-flue boiler and escape from a smoke-box which is arranged between these boilers. Another object of our invention is to provide the smoke-box between the two boilers with means whereby the hot products of combustion can be made to pass directly from the primary upright boiler to the smoke-pipe when a direct draft is required, as, for instance, in starting the fire or for cleaning or can be made to pass through the secondary boiler before reaching the smoke-pipe for fully absorbing the available heat in the gases when the boiler is working normally. A further object is to extend the fuel-magazine of the boiler downwardly and to surround the lower end of the magazine by a water-space for protecting the lower end of the magazine against excessive heat and for increasing the heating-surface.
We claim as our invention:
The combination of a primary upright boiler, a secondary return-flue boiler, an intermediate smoke-chamber secured to both boilers and provided with a horizontal diaphragm which divides the smoke-chamber into a lower and an upper compartment, a smoke-pipe on said upper compartment, the lower compartment connecting the smoke exit of the primary boiler with the direct flues of the secondary boiler and the upper compartment connecting the return-flues with the smoke-pipe, a direct-draft opening formed in said diaphragm, and a damper controlling said opening, substantially as set forth. |
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Steam Boiler
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Francis N. Trevor |
Lockport, Niagara County, NY |
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696,119
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Mar. 25, 1902
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Sawing Machine
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Francis N. Trevor |
Lockport, Niagara County, NY |
"This invention relates to that well-known class of sawing-machines which embody a circular saw, a pendulous bolt-carriage which is swung to and fro by the operator for carrying the bolt against the saw and back, and a gage which is arranged on one side of the bolt-carriage and against which the bolt is pressed by the operator before each cutting movement of the bolt-carriage for producing a uniform thickness of the cut slabs. The gage in these sawing-machines is adjustable toward and from the bolt-carriage for regulating the thickness of the cut. It is, however, often desirable to cut off a slab of greater thickness for the purpose of removing an imperfect portion of the bolt—for instance, a knot—and in other cases it is desirable to cut off slabs of less thickness than those for which the gage is set. The main object of this invention is to provide means for moving the gage quickly out of its normal position either from or toward the saw-carriage for taking a thicker or thinner cut than that for which the gage is set and returning the gage quickly to its normal position when such unusual cut has been taken. Another object of the invention is to provide simple means for regulating the distance through which the gage can be moved out of its normal position and the thickness of the unusual or emergency cut produced thereby." |
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Sawing Machine
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William W. Trevor |
Lockport, Niagara County, NY |
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741,854
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Oct. 20, 1903
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Machine for Removing Bark from Logs
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Francis N. Trevor |
Lockport, Niagara County, NY |
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Machine for Removing Bark from Logs
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William W. Trevor |
Lockport, Niagara County, NY |
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764,873
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Jul. 12, 1904
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Sawing Machine
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Francis N. Trevor |
Lockport, Niagara County, NY |
"This invention relates to that well-known class of sawing-machines which embody a circular saw, a pendulous bolt-carriage which is provided with means for holding the bolt and which is swung to and fro by the operator for carrying the bolt against the saw and back, and a stationary bolt-gage which is arranged at one side of the bolt-carriage and against which the bolt is pressed by the operator before each movement of the carriage toward the saw to correctly gage the cut. In the operation of these sawing-machines, which are used largely for cutting barrel-headings, shingles, &c., the bolt is moved to the saw in a curved path concentric with the pivotal support for the bolt-carriage, and to secure the most efficient action of the machine the bolt should be supported by the carnage at such an elevation that the bolt strikes the saw first at the upper front edge of the bolt without, however, leaning so much toward the saw that the teeth of the latter will draw the bolt against the saw, because in the latter case the saw is liable to be broken unless the bolt splits under the action of the saw. Furthermore, the bolt should be supported at such a height that the mid-height of the back portion of the bolt moves in an arc passing through the axis of the saw, for in such a case the teeth of the saw will pass out of the bolt at about the middle of its rear side, and the saw will cut most nearly with the grain, and the cut from the-front to the rear side of the bolt will have the least width, whereby less power is expended and the cut is completed by the shortest possible movement of the bolt. Heretofore no provision has been made in sawing-machines of this class for maintaining this desirable relation of the bolt to the saw when operating upon bolts which were shorter than the standard length, and consequently short bolts are cut on such machines at an improper elevation and in an undesirable manner. When cutting very short bolts, an auxiliary grate or bottom has been placed upon the grate at the bottom of the carriage for supporting the short bolt; but this means for overcoming the difficulty is objectionable for several reasons, among them that the radius of the arc in which the bolt swings is thereby shortened and the operator is compelled to lift the carriage and bolt higher in order to clear the saw, thus increasing his labor. Furthermore, such an auxiliary support increases the weight of the carriage, cumbers the carriage with a part which is liable to be disarranged or broken by dropping the bolts on the same, and provides for only one change in elevation. The object of this invention is to render the pendulous bolt-carriage and its guide vertically adjustable to raise or lower the level of oscillation as the length of the bolt may require." |
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Sawing Machine
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William W. Trevor |
Lockport, Niagara County, NY |
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883,922
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Apr. 07, 1908
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Sawing Machine
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Francis N. Trevor |
Lockport, Niagara County, NY |
Wilhelm, Parker & Hard - patent attorneys
This invention relates to improvements in wood sawing machines of that class having a pendulous bolt carriage in which the bolt or block to be sawed is suspended .and swung toward and from the vertically arranged circular saw, and a stationary bolt gage located at one side of the bolt carriage against which the bolt is pressed by the operator, before each forward or operative movement of the carriage, to correctly gage the thickness of the piece to be cut. This gage usually has two curved guides against which the bolt bears and slides in the forward movement of the bolt carriage. These machines are intended to saw bolts or blocks of different lengths and to secure the most efficient action of the machine the carriage should be adjusted vertically or the elevation of the bolt in the carriage so regulated that the saw will first enter the bolt near its upper end regardless of the length of the bolt. It has been found in the use of these machines that in order to prevent the bolt from tilting or assuming an inclined position when pressing it against the gage, it is necessary for the gage to be so situated as regards the bolt in the carriage, that one guide will be substantially the same distance above the vertical center of the bolt that the other guide is below such center. By this means, a firm and steady bearing surface is presented to the block, the resisting force of the guides being equally distributed both above and below the center of the block so that any tendency toward the tipping or inclination of the block is prevented. The object of this invention is to provide an adjusting means for the bolt gage and its guides which will be simple in construction and easy of operation and will enable the operator to readily adjust the gage and guides to any size of block which may be used. This is done by making the entire gage adjustable vertically so that the center of the gage can be located substantially opposite the center of the block to be sawed and by providing means for the independent vertical adjustment of the curved guides against which the block or. bolt bears m order to secure these guides in a position where they will be at corresponding distances above and below the center of the block or bolt. Where the blocks to be sawed are very long, it, is not necessary that the guides 60 should be so situated as to engage the end portion of the block but the ends may project above and below the guides, provided the guides are at corresponding distances above and below the center of the block. In such cases, however, the guides should be placed at some distance from the center to prevent the tipping of the block. |
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899,356
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Sep. 22, 1908
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Machine for Shaping Oar Blades
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William W. Trevor |
Lockport, Niagara County, NY |
Wilhelm, Parker & Hard - patent attorneys
This invention relates to wood working machines more particularly intended for shaping or forming the blades of boat oars. The machine is, however, adapted by proper adjustments thereof and the employment of suitable pattern guides, for the production of other articles of analogous shape. The blade of an oar ordinarily tapers or decreases in width from its outer end to its juncture with the loom or stem while it decreases in thickness from the loom to the wide outer or tip end. The machine forming the subject of this application is for giving this general shape to the blades, by successive cuts forming three flat faces or surfaces on each side of the blade. The central faces at opposite sides are parallel in a direction crosswise of the blade, while the other faces converge from the central faces toward the edges of the blade. After the blade is thus shaped it is finished by hand or by other suitable means. The carriage in the machine described is intended to be reciprocated by hand, but it could be reciprocated mechanically if desired.
I claim as my invention:
1. The combination of a driven cutter arranged in a relatively fixed location, a carriage arranged to reciprocate in a straight line past the cutter, devices on the carriage which hold the blank obliquely to the direction of movement of the carriage and which are rotatable to turn the blank about its axis, one of said holding devices embracing the blank between the ends thereof, a pattern past which the carriage moves, and a guide device which is connected to the blank holding means and is held against said pattern to regulate the turning of the blank as the carriage is advanced, substantially as set forth.
2. The combination of a driven cutter arranged in a relatively fixed location, a carriage arranged to reciprocate in a plane parallel with the plane of the cutting edge of the cutter, devices on the carriage which hold the blank obliquely to the direction of movement of the carriage and which are rotatable to turn the blank axially and are adjustable to change the obliquity of the blank, one of no said holding devices embracing the blank between the ends thereof, a relatively stationary pattern, and a guide device which is connected to the blank-holding means and is held against said pattern as the carriage advances to regulate the turning of the blank, substantially as set forth.
3. The combination of a saw arranged in a relatively fixed location, a carriage arranged to reciprocate in a plane parallel with the cutting plane of the saw, holding devices for the blank which are angularly adjustable on the carriage to regulate the obliquity of the blank to the direction of movement of the carriage and are freely rotatable to turn the blank about its axis, a pattern past which the carriage moves, an operating handle for the carriage secured to one of said holding devices, and a guide device which is connected to said holding device and is caused no to bear against said pattern as the carriage advances by hand pressure on said handle, substantially as set forth.
4. The combination of a driven cutter, a carriage arranged to reciprocate past the cutter, means for holding the blank on the carriage and for turning the blank about its axis, two oppositely disposed patterns past which the carriage moves, and a guide device which is connected to the blank - holding means and is held against one of said patterns to regulate the turning of the blank in one direction and is held against the other pattern to regulate the turning of the blank in the opposite direction, substantially as set forth.
5. The combination of a driven cutter, a carriage arranged to reciprocate past the cutter, means for holding the blank on the carriage and for turning the blank about its axis to present different portions thereof to the cutter, a pattern past which the carriage moves, and two devices projecting from said blank-holding means, each of which devices serves as a handle for holding the other against said pattern to guide the blank, one device acting as the guide in one position of the blank and the other acting as the guide in another position of the blank, substantially as set forth.
6. The combination of a saw arranged in a relatively fixed location, a carriage arranged to reciprocate past the saw, blank holding devices on said carriage which are rotatable for turning the blank about its axis, one of said devices being adjustable laterally toward and from the plane of the saw and both of said devices being angularly adjustable to align them in different lateral adjustments of the first mentioned device whereby the blank can be held in different positions obliquely to the direction of movement of the carriage, a pattern plate past which the carriage moves, and a guide which is connected to one of said holding devices and is held against said pattern plate, substantially as set forth.
7. The combination of a driven cutter, a carriage arranged to reciprocate past said cutter and also to swing toward and from the plane of the cutter, holding devices for the blank which are angularly adjustable, and one of which holding devices is also adjustable toward and from the plane of the cutter, said holding devices being also constructed to turn the blank about its axis, and guide means for said blank, substantially as set forth.
8. The combination of a driven cutter, a carriage arranged to reciprocate past, the cutter and also to swing toward and from the plane of the cutter, holding devices for the blank which are angularly adjustable on the carriage and one of which is adjustable toward and from the plane of the cutter, said holding devices being also rotatable to turn the blank about its axis, a guide device secured to one of said holding devices, and a pattern plate against which said guide device bears as the carriage is advanced, substantially as set forth.
9. The combination of a driven cutter, a carriage arranged to reciprocate past said cutter and having grooved supporting wheels, a track having a rounded face on which said carriage wheels travel whereby the carriage is adapted to swing toward and from the cutter, means for guiding said carriage, and means for guiding the blank in the advance movement of the carriage, substantially as set forth.
10. The combination of a driven cutter, a carriage consisting of upright end posts, and horizontal bars adjustably connecting said end posts, supporting rollers for said carriage, a track on which said rollers travel, for adjusting the upper portion of one of said end posts toward and from the plane of said cutter, holding devices for the blank which are angularly adjustable on said carriage, and guide means for said carriage, substantially as set forth.
11. The combination of a driven cutter arranged in a relatively fixed location, a carriage for holding the blank arranged to reciprocate lengthwise of the blank past said cutter, a holding device for the blade end of the blank, and a hollow chuck for holding the loom, clamping devices carried by said chuck and which are movable to grasp and release the loom, and means for turning said chuck, a pattern past which the carriage travels, and a guide secured to said chuck and bearing against said pattern to regulate the turning of said blank, substantially as set forth.
12. The combination of a driven cutter arranged in a relatively fixed location, a carriage for holding the blank arranged to reciprocate lengthwise of the blank past said cutter, a holding device for the blade end of the blank, and a chuck for holding the loom comprising a rotatable open sided shell, clamping devices for the loom carried by said shell, and an open-sided support in which said shell is mounted to rotate, said holding device and said chuck support being angularly adjustable to hold the blank obliquely to the line of movement of the carriage, substantially as set forth.
13. The combination of a saw arranged in relatively fixed location, a carriage arranged to reciprocate past the saw, means for rotatably holding the blank on the carriage, guide means for turning the blank as it passes the saw, a driven edge cutter, a pattern on the carriage, and means cooperating with said pattern to guide said edge cutter, substantially as set forth.
14. The combination of a saw arranged in relatively fixed location, a carriage arranged to reciprocate past the saw, means for rotatably holding the blank on the carriage, guide means for turning the blank as it passes the saw, a movable driven edge cutter, a pattern on the carriage, means cooperating with said pattern to guide said edge cutter, and means for normally holding said edge cutter out of action, substantially as set forth. |
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939,760
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Nov. 09, 1909
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Sawing Machine
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Francis N. Trevor |
Lockport, Niagara County, NY |
Wilhelm, Parker & Hard - patent attorneys
This invention relates more particularly to improvements in wood sawing machines of that class having a pendulous carriage in which the bolt or block to be sawed is held and swung toward and from a vertically arranged circular saw. In these machines a gage is located at one side of the bolt carriage and the bolt is released and moved by the sawyer against the gage to properly gage the thickness of the pieces to be cut prior to each advance movement of the carriage toward the saw. The gage is adjustable toward and from the plane of the saw for regulating the thickness of the pieces which are sawed from the bolt. It is quite often desirable to be able to cut a slab or piece of less thickness than those for which the gage is set, to saw the bolt to the best advantage, or for removing an imperfect portion of the bolt to avoid a knot or knurl in the wood, and for this purpose the present machine is provided with means for quickly shifting the gage whenever desired to a position for sawing such thin piece or pieces and returning it to the normal position. These machines are used for sawing barrel heading, or other slabs or pieces of uniform thickness, and shingles or pieces of wedge shape, and the gage is adapted to be secured in a vertical position for sawing the barrel heading and similar pieces, and to be tilted alternately in opposite directions on a central axis for sawing the shingles and the like. The primary object of this invention is to provide an efficient mechanism of simple, strong, inexpensive and durable construction for quickly shifting the gage from and returning it to the normal position in which it is set for sawing pieces of like thickness. |
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1,647,980
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Nov. 08, 1927
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Machine for operating on barrels or other containers
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Delbert A. Berean |
Barker, NY |
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Machine for operating on barrels or other containers
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William W. Trevor |
Lockport, NY |
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1,648,372
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Nov. 08, 1927
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Machine for operating on barrels and the like
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Delbert A. Berean |
Barker, NY |
"This invention relates to improvements in hoop driving and barrel leveling machines, and more particularly to machines used for driving the usual temporary heavy trussing hoops on trussed barrels..." |
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Machine for operating on barrels and the like
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William W. Trevor |
Lockport, NY |
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