Manufacturers Index - L. D. Howard
L. D. Howard
St. Johnsbury, VT, U.S.A.
Manufacturer Class:
Wood Working Machinery & Metal Working Machinery
This page contains information on patents issued to this manufacturer.
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70,570
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Nov. 05, 1867
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Improvement in bevels
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Leonard D. Howard |
St. Johnsbury, VT |
Typical bevel with the patented item the screw and nut recessed to be flush with the bevel surface as well as the "cup" that they are contained in.
This bevel was made by the Star Tool Co. and, according to the EAIA Directory of American Toolmakers, some bevels were reported marked with Howard's name.
Known examples (pictures 3 and 5) manufactured with bronze body. Known example (picture 4) with graduations on blade |
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92,970
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Jul. 27, 1869
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Improved shutter-fastener
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Leonard D. Howard |
St. Johnsbury, VT |
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96,700
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Nov. 09, 1869
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Improvement in tool for opening boxes
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Leonard D. Howard |
St. Johnsbury, VT |
Of interest because Howard manufactured both woodworking tools (a sliding bevel) and woodworking machines (a miter-cutting tablesaw). |
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103,335
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May. 24, 1870
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Improvement in saw-bucks
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Leonard D. Howard |
St. Johnsbury, VT |
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111,746
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Feb. 14, 1871
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Improvement in adjustable bevels
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Leonard D. Howard |
St. Johnsbury, VT |
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111,747
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Feb. 14, 1871
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Improvement in clothes-driers
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Leonard D. Howard |
St. Johnsbury, VT |
Of interest because Howard manufactured both woodworking tools (a sliding bevel) and woodworking machines (a miter-cutting tablesaw). |
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126,549
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May. 07, 1872
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Improvement in rein-holders for carriages
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Leonard D. Howard |
St. Johnsbury, VT |
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2,120
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Mar. 01, 1873
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Rein-holder
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Leonard D. Howard |
St. Johnsbury, VT |
"Constructed of brass or other metal and attached to the dasher of a carriage. It consists of a pair of serrated jaws pivoted to a plate and geared together so as to operate in unison and combined with springs which cause them to grip the reins."
Patent term was 5 years. |
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183,397
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Oct. 17, 1876
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Improvement in mitering-machines
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Leonard D. Howard |
St. Johnsbury, VT |
This tilting-arbor sliding table saw design uses a "trunnion" on the outboard end of the arbor, which is moved to adjust the angle. The end of the arbor nearer the blade pivots about a shaft. A pulley on the shaft receives power via a flat belt from a large pulley at the rear (outfeed) of the saw, an arrangement that did not work well because as the saw was tilted the belt would get tighter on one edge and looser on the other, which led to the belt migrating off the arbor pulley. We are told that most users gave up on tilting the blade and kept it at right angles to the top so that the belt tracked properly.
Like all other tilting-arbor designs of the day, the Howard patent saw was ultimately obsoleted by John Connell's 1878 invention of the tablesaw trunnion that maintained a fixed line of intersection between the tabletop and one surface of the tilting sawblade; see patent 210,100. But it took a while for the superiority of the Connell design to be understood and in the meantime L. D. Howard had good success with his saw. |
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314,843
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Mar. 31, 1885
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Miter-sawing machine
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Leonard D. Howard |
St. Johnsbury, VT |
The innovation in this design is that as the blade is raised and lowered, the arbor remains a fixed distance from the plane defining the front edge of the table. The design was later improved in patent 356,642. |
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324,323
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Aug. 11, 1885
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Combined try-square and bevel
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Leonard D. Howard |
St. Johnsbury, VT |
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356,642
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Jan. 25, 1887
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Machine-table
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Leonard D. Howard |
St. Johnsbury, VT |
Improvements to patent 314,843. |
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513,326
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Jan. 23, 1894
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Power-hammer
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Leonard D. Howard |
St. Johnsbury, VT |
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657,114
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Sep. 04, 1900
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Power-hammer
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Leonard D. Howard |
St. Johnsbury, VT |
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709,577
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Sep. 23, 1902
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Drop-hammer
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Leonard D. Howard |
St. Johnsbury, VT |
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