US429738A

US429738A - Casper l

Info

Publication number: US429738A
Authority: US
Publication date: 1890-06-10
Anticipated expiration: 1907-06-10

Description

(No Model.)

O. L. REDFIELD. IMPRESSION DEVICE FOR MATRIX MAOHINES.

No. 429,738. Patented June 10, 1890.

/ lllll 514 0011 ['06 Jain- 17 UNITED STATES PATENT OFFICE.

CASPER L. REDFIELD, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE CHICAGO MATRIX MACHINE COMPANY.

IMPRE SSION DEVICE FOR MATRIX-MACHINES.

SPECIFICATION forming part of Letters Patent No. 429,738, dated June 10,1890.

Apulication filed May 1, 1889. Serial No. 309,289. (No model.)

To all whom it may concern: to a collar on the shaft 2, and its function Be it known that I, CASPER L. REDFIELD, a is to return the nut to its initial position afcitizen of the United States, residing at lWIinter it has been restrained in its rotation and neapolis,in the county of I-Iennepin and State is again released. As will be obvious, the 5 of Minnesota, have invented certain new and stop 8, being released fromits catch and thrust useful Improvements in Impression Devices forward by its spring 16, will engage one of forMatrix-MakingMachines, of which the folthe pins 7, as shown in Fig. 1, and stop the lowing is a specification. rotation of the nut. The shaft and screw My invention relates to machines for formcontinuing to rotate will carry the nut down- :0 ing matrices by the successive impressions of ward until the engaged pin has passed below separate type-dies; and its object isimprovethe engaging stop 8, when the nut will again ment of the devices for thrusting a plunger be free to rotate. The shaft rotation, assisted upon the dies to form the impressions in the by the force of the spring lat, will then carry matrix-body. the nut forward, and a projection 17, in the 15 My improvements are illustrated in the acrear of and immediately above the pin 7, will companying drawings, in which engage the stop-pin 8, and the projection hav- Figure 1 is a vertical sectional view of the ing an inclined face will force the stop-pin 8 portion of the machine-frame, showing the backward until it has reached the position to impression devices in elevation. Fig. 2 is a be re-engaged by the catch 12 and held free 20 similar section showing a portion of the i'mfrom further contact with the nut or its propression devices in the vertical section. Fig. jection. Thus the plunger-carrying nut is 3 is a horizontal sectional View on the line cc a: permitted constant rotation without reciproof Fig. 1, and Fig. i is also a horizontal seccatory motion until in the operation of the tion on the line y y of Fig. 2. machine the hammer 13 is operated to free 2 5 In said drawings, 1 designates a portion of the catch and permit the stop-pin 8 to engage the machine-frame; 2, avertical shaft rotated one of the pins on the nut, when immediately by means of a pulley 8. The lower portion 4 a reciprocatory motion is produced that will of the shaft 2 is screw-threaded, and around continue during the time the nut is prevented it is a nut 5, and on the nut is formeda plunfrom rotation, and when the single downward o ger 6 for striking the type-dies (not shown) reciprocation has been made the engaging upon the descent of the nut. The shaft 2 and pins will have been released and avoid a secits screw 4 being rotated in the direction in- 0nd reciprocation for the one blow of the hamdicated by the arrow .2', and being suitably mer 13. prevented from rising and the nut turning The generic features of invention herein 5 with it, it is obvious that upon the nut being disclosed are reserved to be claimed in an stopped in its rotation and the screw continuearlier pending application filed by me April ing to turn the nut will be forced downward. 3, 1889, and Serial No. 305,882. As a means of stopping the rotation of the What I claim is nut, there are provided at its

sides pins

7, 1. In an impression device foramatriX-ma- 0 having fiat surfaces at the one side, and to chine, a screw-threaded shaft, a nut thereon engage these pins a spring-actuated stop 8 is carrying a plunger, means for stopping the locatedin the recess 9 in the wall of the frame. nut rotations to produce plunger thrusts, and The stop 8 is carried on a rod 10, that has a aspring connecting the shaft and nut, adapted head 11, which is engaged by a spring-catch to return the latter to its initial position upon 5 5 12. The spring-catch is released from engage the completion of a thrust, substantially as ment with the head by means of a knocker set forth. 13, that may be actuated at the desired mo- 2. In an impression device for matrix-makment by any suitable mechanism connected ing machine, a rotary shaft havinga threaded with the operative parts of the machine. The end, anut thereon carrying a plunger, a spring too 50 nut 5 is connected to-one end of a spring 14, connecting the nut and shaft, projections on and the other end of the spring is attached the nut, a spring-stop for engaging the nut,

and project-ions on the nut for engaging and trneting the nut, andsuitable means provided removing the stop, substantially as set forth. on the nut to return the stop to initial posi- In an impression device for n nmtrixtion, substantially as set forth.

machine, a rotating shaft having a threaded end, a nut thereon carrying a plunger, 21 reciprocating stop for en gaging the nut to cause it to make plunger thrusts, aspring for re- (JASPER L. RE'DFIEL'D. \Vitnesses:

P. II. GUNCKEL, E. M. SCHUMANN.