US730724A

US730724A - Clutch.

Info

Publication number: US730724A
Application number: US10889002A
Authority: US
Inventors: Red Weimar; Samuel P Smurr
Original assignee: GARRIE S FRENCH
Current assignee: GARRIE S FRENCH
Priority date: 1902-05-26
Filing date: 1902-05-26
Publication date: 1903-06-09
Anticipated expiration: 1920-06-09

Description

f No. 730,724. PATENTED JUNE 9119031" P. WEIMAR & is. P. SMURR. f'

CLUTCH.

APPLIOATION FILEDv MAY 2e.' 1902;

N0 MODEL.

as co. wow-Lv UNITED STATES Patented. June 9, 1903.

PATENT OFFICE.

"IED VEIMAR AND SAMUEL I). SMURR, OF CHICAGO, ILLINOIS, ASSIGNORS OF TlVO-THIRDS TO GARRIE S. FRENCH, OF CHICAGO, ILLINOIS; SAID SMURR ASSIGNOR TO SAID WEIMAR.

CLUTCH.

SPECIFICATION forming part of Letters PatentNo. 730,724, dated June 9, 1903.

Application filed May ZG, 1902. Serial No. 108,890. (No model.)

"o all whom, it muy oon/cern.-

Beit known that we, FRED VVEIMAR and '.MUEL P. SMURR, citizens of the United lates of America, residing at Chicago, in the `unty of Cook and State of Illinois, have in- -.nted certain new and useful Improvements .n Clutches, of which the following is a specification.

Our invention relates to certain new and useful improvements in clutches; and its object is to provide a device of this class which shall be cheaperand more elfective than those hitherto in use.

To these and certain minor ends our invention consists in certain novel features of construction, which are fully illustrated in the accompanying drawings and described in this specification.

In the drawings, Figure lis a side elevation of our improved clutch, a certain portion of the pulley being broken away to show the interior construction. Fig. 2 is a diametrical section in the line 2 2 of Fig. 1. Fig. 3 is a section inthe line 3 3 of Fig. 2. spective of the spiral band, which is the connecting element of the clutch; and Fig. 5 is a diametrical section illustrating the clutch upon a line-shaft and adapted to connect the two adjacent ends of two sections of the same.

Referring to the drawings, A is a shaft on which the pulley is mounted.

B is an enlarged cylindrical portion or boss, which closely ts the shaft and is secured against rotation by a key Z).

C is the pulley, which runs loose on the shaft and is constructed as shown in Fig. 2, Wherein C is a suitable web forming one end face of the pulley, and C2 is the peripheral portion thereof. The opposite end'of the pulley C is formed by a web D, integral witha sleeve D', which also runs loose upon the shaft. The web D is rigidly secured t'o the peripheral portion C2 ofthe pulley C. Upon the'sleeve D is a longitudinally-movable collar E, secured against rotation on the sleeve by a key e. This collar can be shifted longitudinally by a suitable fork of the usual type, (designated by the letter F.)

Inside the hollow pulley C is a spiral strap Fig. 4t is a per-- G, surrounding the boss B. A suitable hook g engages a projecting lug c upon the web C of the pulley and is held in place by a similar lug c'. The opposite end of the strap terminates in an upward bend or shoulder g'. (Shown in Fig. 3.) Against this shoulder rests the head of a screw 71 adjustably secured in the end of a lever II, which is pivoted between its ends on a suitable bracket d, secured to the web D. This lever has a beveled surface 71', which is engaged by a suitable roller e' upon the periphery of the collar E. It will be seen that when the collar E is forced toward the pulley C the roller e' bears upon the beveled surface h of the lever, thereby swinging the lever and correspondingly moving the shoulder` g' of the strap G through the contact of the screw 71, therewith. This tightens the strap upon the boss B and causes the pulley C, sleeve D, and collar E to rotate with the shaft and boss. Whcnthe fork F is shifted back to the position shown in Fig. l, the elasticity of the strap, which is preferably constructed of spring-steel, loosens it upon the boss and releases the pulley from its connection therewith. This 'isin brief, the operation of the clutch.

The advantage of this clutch lies in the fact that the cl utching-surface is elastic and adapts itself to any irregularities of the surface of the boss. In clutches of ordinary types itis almost impossible to get an absolutely true surface, and as a result onlya few points are in actual engagement at any one time, an unsatisfactory result beingthereby produced. With our clutch, however, the strap tightens up and accommodates itself to any irregularities which may exist, either originally or in consequence of wear upon the boss, and a tight grasp is at all. times assured.

This clutch can be equally well applied to -line-shafts, .and this modification is illustrated in Fig. 5, wherein the construction is precisely the same, except that two shafts A and A2 are shown supported in any suitable journals. The shaft Ais a driving-shaft, and it has keyed to it the boss B, as has the driving-shaft in the preferred form. A2 is the driven shaft, and to it is keyed the pul.-

Corrections in Letters Patent No. 730,724.

ley C by means of asuitable key (L. It is obvious that the operation will be precisely identical with that of the other form.

\Ve claim as new and desire to secure by Letters Patentl. In a device of the class described, the combination with a shaft, a pulley running loose thereon, and a strap having a suitable shoulder secured at one end, and at the end opposite to said shoulder, to said pulley, of a lever pivoted on said pulleyand havingasuitable portion adapted to engage said shouldei` to push upon the same and tighten. said strap, and means for actuating said lever, substantially as described.

2. In a device of the class described, the combination with a shaft, a pulleT thereon, a strap secured at one end to said pulley and ashoulderupon the opposite end of said strap, of a lever pivoted upon said pulley, means for actuating said lever and a suitable adjustable screw adapted to engage said shoulder when said lever is moved, substantially as described.

3. In a device of the class described, the combination with a shaft, a pulley loose thereon, a suitable strap secured at one end to said pulley and surrounding said shaft, a lever adapted by its motion to tighten said strap upon said shaft, pivoted to said pulley and a suitable beveled surface upon said lever, of a suitable ring, longitudinally movable with respect to said pulley and secured against rotation with respect thereto, and a suitable projection upon said ring adapted to engage said beveled surface and rotate said lever when said ring is moved longitudinally, substantially as described.

4. In a device of'the class described, the combination with ashaft, a pulley loose thereof the case in the Patent Office.

[SEAL] on, asuitable strap secured at one end to said pulley and surrounding said shaft, a lever adapted by its motion to tighten said strap upon said shaft, pivoted to said pulley and a suitable beveled surface upon said lever, of a suitable ring, longitudinally Inovable with respect to said pulley and secured against rotation with respect. thereto, and a suitable roller upon said ring adapted to engage said beveled surface and rotate said lever when said ring is moved longitudinally, substantially as described.

5. In a device of the class described, the combination Witha shaft, a pulley loose thereon, a suitable strap secured at one end of the pulley and surrounding the shaft, a lever adapted by its motion to tighten said strap upon the shaft, pivoted to said pulley, and a suitable beveled surface on said lever termihating in a surface parallel to the length of said lever, of a suitable ring longitudinally movable with respect to said pulley and secured against rotation with respect thereto, and a suitable projecting member upon said ring, adapted to engage said beveled surface and rotate said lever when said ring is moved longitudinally and with continued motion to slide onto the surface of said lever parallel toits length, thereby locking the lever in place, substantially as described.

In Witness whereof We have hereunto set our hands, at Chicago, in the county of Cook and State of Illinois, this 17th day of May, A. D. 1902.

FRED VEIMAR. SAMUEL P. SMURR.

Witnesses: v

CEAS. 0. SHERVEY, S. BLISS.

It is 4hereby certified that in Letters Patent No. 730,724, granted June 9, 1963, upon the application of Fred Veimar and Samuel P. Smurr, of Chicago, Illinois, for an improvement in Clutches, errors appear requiring the following corrections, viz: In

the grant and in the printed head of the specilication it is stated that said applicants had assigned two-thirds to Garrie S. French, of Chicago, Illinois, said Smurr, assigner to said Weimar, Whereas it should have stated that said applicants had assigned the entire interest to said W'eima'r and Gerrie S. French; and that the Said Letters Patent should be read with these corrections therein that the same may conform to the record Signed and sealed this 12th day of July, A. D., 1904.

E. B. MOORE,

Acting Commissioner of Patents.

Corrections in Letters Patent No. 730,724.

FRED VEIMAR. SAMUEL P. SMURR.

Witnesses: v

CEAS. 0. SHERVEY, S. BLISS.

E. B. MOORE,

Acting Commissioner of Patents.

Corrections in Letters Patent No. 730,724.

It is hereby certified that. in Letters Patent No. 730,724, granted June 9, 1903,

npon the application of Fred Weimar and Samuel P. Smurr, of Chicago, Illinois, for an improvement in Cluiclies, errors appear requiring the following corrections, viz: In the grant and in the printed head of the specification it is stated that said applicants had assigned two-thirds to Garrie S. French, of Chicago, Illinois1 said Smurr, assignor to Said Weimar, whereas it should have stated that said applicants had assigned the entire interes! to .vairl Weimar and Gerrie S. French; and that the said Letters Patent should he read with those vorrictions therein that the same may coliform tothe record of the case in the Patent Ollioe.

Signed and sealed this 12th day of July, A. D.7 1904.

E. B. MOORE,

Acting Commissioner of Polenta [SEAL] f