|
Title: |
1826 Article-Mason & Tyler, Lever Press |
|
Source: |
Journal of the Franklin Institute, V1, Aug 1826, pg. 105-106 & Plate 44 |
|
Insert Date: |
11/30/2016 4:30:59 PM |
A description of an improved lever press, for cutting, piercing, &c. By Rufus Tyler, Machinist, of Philadelphia.
The screw press is usually employed for the purpose of piercing and cutting metallic plates, for various purposes; it is, however, more difficult to construct, and, consequently, more expensive than the lever press, whilst the latter possesses the advantage of leaving both hands at liberty, to manage the work. For the purposes to which it is applied, it is in all respects equal to the screw press, and in several, superior; the practical workman will at once perceive the excellence of the mode of fixing the bed. This was formerly regulated by screws, it was attended with great difficulty, and was rarely done with that accuracy, which is attained by the mode here described, with such facility as to render a trial unnecessary.
A, fig. 2, the body of the press, B, a cylindrical slide, working in the box C, which is connected to the lever D by the plates E E, a piece of steel, F, is introduced between the top of the slide and the lever, as seen in fig. 3; the use of which is to present sufficient surface to sustain the pressure, and to preserve as nearly as possible the uniform distance of-the centres, which connect them.
G is a punch or cutter, the conical shank of which is accurately fitted to a corresponding hole in the bottom of the slide.
The die seat I, is a circular block of metal, expanding into a flinch at the bottom, by which the hooks K K hold it firmly down upon the flat bed upon which it rests.
By this arrangement, the most intricate and delicate dies or cutters may be set with great facility, and the utmost accuracy, by any inexperienced person.
L is a stop screw, to prevent the cutter from entering too deep into the lower die. |
|
1826 Mason & Tyler, Lever Press
1826 Mason & Tyler, Lever Press Toggles
|
|