US363351A

US363351A - Henry a

Info

Publication number: US363351A
Authority: US
Publication date: 1887-05-24
Anticipated expiration: 1904-05-24

Description

(No Model.)

H. A. AINSWORTH.

- DROP HAMMER. No. 363,851. Patented May 24,1881? PER 0/? EQUIVALENT MA T E/AL.

UNTTED STATES PATENT EErcE.

VHITE & 00., OF SAME PLACE.

DROP HAMMER.

SPECIFICATION forming part of Letters Patent No. 363,351, dated May 24, 1887.

Application filed March 1, 1887. Serial No. 229,297.

To all whom it may concern.-

Be it known that I, HENRY A. AINSWORTH, of Moline, in the county of Rock Island and State of Illinois, have invented certain new and useful Improvements in Drop-Hammers, of which the following is aspeeification.

My invention relates to drop-hammers; and it consists in the combination, with the hammer and a lifting-strap therefor, of elevatingrollers having a bearing-face composed wholly or in part of paper or equivalent material.

Theinvention further consists in the combination, with the elevatingrollers thus constructed, of a hammer provided with a metallic, preferably steel, strap arranged to pass between the rollers.

I-Ieretofore it has been customary to employ in machines of this class cast iron rollers, which were arranged to press upon both sides of a wooden strap passing upward between them;.but such plan is objectionable for the reason that in a comparatively short time the wood splinters and slivers off, and renders the strap useless, because of its decreased strength and thickness, the rollers, as a rule, being capable of approaching each other alimited distance only. Furthermore, in applying pressure upon the strap by means of or through the, metallic rollers the latter, or some portion of the framework directly or indirectly c011- nected therewith, are liable to be strained and broken, this being especially true where the hammer-head isheavy and'eonsiderable pressure is required to be applied to its strap to elevate it.

To overcome these objections to prior eonstructions is the object of my invention.

Referring to the accompanying drawings, Figure l is a perspective view of myimproved drop-l1ammer, and Figs. 2 and 3 views illus trating the construction of the rollers.

Referring to the drawings, A indicates the press as a whole,whieh' may be of any desired "construction, except as to the features here- (No model.)

ness, and durability. This strap passes upward between the elevating-rollers D D, as is usual, one of the rollers, D, being carried in fixed bearings, whilethe other, D", is mounted in a pivoted yoke, E, as shown.

Upon the shaft F of each roller is a gearwheel, G, the gears on each roller meshing and giving uniform rotation thereto, one of the shafts being furnished with a band-pulley, as usual, to receive motion from any convenient source.

The rollers D D'may be made up invarious ways-that is to say, they may he composed of a series of disks clamped between metallic end plates, as shown in Fig. 2; or they may be made by winding thepaper about the rollershaft until a roll of the required size is built up, as shown in Fig. 3. Instead of either of these plans the roller may be made of papiermaeh compressed in a hydraulic press to the desired size and form. I do not, however, restrict myself to any particular method or manner of building up the bearing-surfaces of these rollers, as it is a matter that may be varied considerably without departing from the spirit of my invention.

\Vhile paper or papier mach will give just the degree of elasticity desired, and will present a surface admirably adapted to act upon the metal strap, I do not limit myself to its use, but mean to include in my claims any equivalent material, such as leather, real or artificial, and like fibrous substances.

The rollers herein described may be used in connection with the ordinary wood hammerstraps heretofore used, if desired; and it will. be seen that under this combination the wood will not splinter or sliver off, as the bearingfaees of the rollers are somewhat elastic or yielding, and while they press against the strap with sufficient force to elevate the hammer, the strap will not be mashed or crushed out of shape, as happens when metallic rollers are used. I prefer, however, to use the steel strap for the reason that it is stronger, lighter, and more durable, and is not as liable to injure the face of the rollers as the wooden strap.

Having thus described my invention, what I claim is- 1. In a drop-press, the combination, with a hammer andits strap, of the elevating-rollers and arranged to slide therein, a steel lifting- D D, provided with bearing-faces of paper or strap attached to the hammer-head and exits equivalent. 7 tending upward therefrom, and paper-faced I 5 2. In a drop-press, the combination, with a rolls bearing against opposite faces of said 5 hammer and the metallic strap secured therestrap, substantiallyas set forth.

to, of the rollers D D, provided with bearing- In witness whereof I hereunto set my hand faces of paper or its equivalent. in the presence of two witnesses. 3. In a drop-press, the combination, with a V Y hammer and its strap, of the elevating-rollers H BY AINSNVORTH' 10 provided with yielding or elastic bearing-faces.

T4. The combination, in a drop-press, of a supporting-frame, a hammer-head mounted Witnesses:

J. B. OAKLEAF, JNo.. J. WILLIAMS.