US496370A - Leeoy h - Google Patents

Description

(No Model.)

L. H. SMITH. TYPE WRITING MACHINE.

No. 496,370. Patented Apr. 25; 1893i %NVENTOR. A mZ-ifi,

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UNITED STATES PATENT OFFICE.

LEROY H. SMITH, OF ITHAOA, NEW YORK, ASSIGNOR TO 'IHE ITHA CA GUN COMPANY.

TYPE-WRITING MACH l N E.

SPECIFICATION forming part of Letters Patent No. 496,370, dated April 25, 1893.

Application filed July 15, 1892. Serial No. 440,168. (No model.)

ToaZZ whom it may concern.-

Be it known that I, LEROY H. SMITH, a citizen of the United States, residing at Ithaca, in the county of Tompkins and State of New York, have invented certain new and useful Improvements in Type-Writing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to that class of typewriting machines in which the types are hung in a ring to strike like hammers, upward to a common center, and its object is to provide means for adjusting the hangers to the cone bearings of the type shaft with the greatest nicety for the purpose of giving the type a perfectly accurate stroke and yet permit it to be operated easily not only when the machine is new but when the hanger bearings become worn by long use; to provide means for adjusting the type-bar so as to align the type; and to provide means for connecting the pitman with the key-lever or key-draw-bar so that the same shall be securely held while in service, and yet so that it may be quickly disconnected for adjusting the stroke, 850.

To this end my invention consists in the construction and combination of parts forming a type-writing machine hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure I, represents in side elevation a type and its immediate connections according to my invention. Fig. II, represents a hanger and a portion of the ring plate in vertical circumferential section relative to the plate. Fig. III, is an under side view of a series of hangers and aportion of the ring plate. Fig. IV, represents in side elevation, the pi-tman hook and a portion of a key-lever, or keydraw-bar. Fig. V, shows a transverse vertical section of the lever or draw-bar and pitman-hook.

10 represents the ring -plate which surrounds the top of the basket in the usual manner.

11 is the type having a cylindrical shank which may be set into the face of the hammer 12 in any direction to accommodate the direction of the hammer-helve 13 and bring the type into line as to its rotary position.

14c is the hammer shank having a socket into which the helve 13 is fitted to telescope, for the purpose of aligning the type in that direction, and 15 is a set screw in the shank adapted to hold the helve when thus set. The shank is rigidly fixed upon an axle 16 which is conical at its ends to fit conical bearings in the ears 17 of the hanger 18. This hanger is attached to the ring-plate 10 by means of two screws 19 and 20. The screw 20 is directly over the axle 16 of the typehammer, and the ring-plate is countersunk inits under side around the screw hole to cut away the bearing of the hanger so that the latter will rest at its sides only, on the'plate. This is to permit the middle of the hanger to be forced upward by the screw 20 thereby springing its ears 17 toward each other and tightening their bearing upon the cone-ended axle. The hangers are made of sheet brass or other similarly flexible material, and the cars 17 are closed upon the axle in the process of forming the hanger. The screw 19 has a little freedom in its hole through the ring-plate to permit lateral motion enough to the tang to adjust the type in that direction and the screw may be set home to rigidly bind the hanger when adjusted. The hangers are secured to the ring-plate in two complete rings, the tangs of the inner ring all extending inward and the tangs of the outer ring all extending outward, and I form the hammer-shanks 14 with upward curved arms 22 to pass over the adjacent hanger ears and bring the attaching pivot 23 of the pitman to the right point.

24 represents the draw-bar or key-lever by means of which the key operates the type through the pitman 25, which is pivotally attached at its upper end to arm 22 and at its lower end to a hook 26 which is located between the sides of the folded sheet metal 1ever 24.. This hook projects up through aslot in the lever where the sides of the lever are cut down enough to admit the loop end 27 of the pitman under the hook, and the body of the hook is fitted to slide lengthwise within the lever to bring the hook over the uncut top of the lever where there is not space for the pitman to pass either in or out under the hook. The hook is shown in its normal position where the pitman cannot be removed, and the dotted lines 28 show the position of the hook in which the pitman may be unhooked therefrom.

29 represents a spring catch hung in the lever 24: upon a rivet 30 with one end bent to bear against the under side of the hook body and the other end shaped to bear against the rear end of the hook body tending to hold the hook in its normal position, but not holding it so firmly but that a little force applied to the hook will move it either way without the aid of any tool. Should any type be found loose it can be readily tightened by turning the screw 20 which is on top of the plate where it is easily reached.

Having thus fully described my invention, what I believe to be new, and desire to secure by Letters Patent, is the following:

1. The combination in a typewriting machine of a hanger plate having cavities in it; hangers of flexible material formed with flat bases and projecting ears; the base of each hanger resting upon the plate across one of the said cavities and ascrew passing through each cavity and connecting the plate and hanger, substantially as described.

2. The combination in a typewriting machine of a hanger plate having cavities; and type hangers secured to the plate across the said cavities, and means for depressing the base of the hanger into the cavity, substantially as described.

3. The combination of a longitudinally grooved key-lever having an aperture in its upper edge extending in to the groove and the sides of the lever at the aperture being lower than the adjacent edge thereof; and a hook having a body shaped to slide in the said groove with the hook projecting through the aperture and a type-hammer pitman fitted to engage the hook, substantially as described.

4. The combination of a longitudinally grooved key-leverhaving an aperture through it; a pitrnan-hook fitted to slide in the said groove and to project through the said aperture and a spring fitted to bear upon the hook, substantially as described.

5. The combination of a longitudinally grooved key-lever having an aperture through it; a pitman hook fitted to slide in the groove and to project through the aperture, and a spring fastened midway to the lever and shaped to bear at its two ends upon the hook body, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

LEROY Il. SMITH.

Witnesses:

C. J. RUMsEY, EDWIN GILLETTE.

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