US1529075A - Wrench - Google Patents

Description

M. MCNTYRE WRENCH Mud 10 19x25' 1,529,075

Filed Jah. 21', 1924 Wim 5a 3,

l v numunl 'ww wm@ Patented Mar. l0, 1925.

lUNHED STATES MILES MCINTYRE, OF HEALDSBURG, CALIFORNIA.

WRENCH. A'

Application filed January 21, 1924.` Serial No. 687,623.

To IZ/ whom t may concern:

Be it known that I, Wiens MCINTYRE, a citizen of the -United States, and a resident of Healdsburg, county of Sonoma, State of California, have invented a new and useful lVrench, of which the following is a specification. j

The present invention relates to improvements in wrenches and has particular reference to a wrench designed to be used inthe adjustment of the bands in a transmission arrange-ment used in a Ford car. To adjust the latter bands-it is necessary to unscrew the cover of the transmissionycase and to manipulate various nuts and rods `which are hard to reach by the-use of ordinary tools such as are commonly carried in automobile tool kits. It is proposed in the present invention to provide a combination wrench made for the particular purpose of adjusting the bands referred to and to combine in one the various tools that might otherwise have to .be used, so that the operator may perform the whole operation of adjusting the bands with the one wrench, which is very inexpensive and simple. Further objects and advantages of my device will appear as the yspecification proceeds.

The preferred form of my invention is illustrated in the accompanyingdrawing, in which Figure 1 shows a perspective viewof the top portion of the Ford transmission case for which my wrench is made, Fig. 2 is a plan View of my wrench, and Fig. 3 is a side View of the same.

`While I have shown only the preferred form of my invention, I wish to have it understood that various changes or modifications may be made within the scope of the claims hereto attached wit-hout departing from the spirit of the invention.

'The transmission case 1 for which my wrench is made is substantially cylindrical in form and provided with an embossment 2 projecting from the cylinder and providing` a flat face for the transmission cover 3, which latter is secured to the transmission case by means of screws 4. The transmission mechanism included in the case is the so-called planetary system and includes three drums surrounded by three bands, 5, 6, and 7, the iirst one of which is the reverse speed band and the second one of which isv Y through which extend three shafts, S, 9, and

11, commonly known as the reverse pedal shaft, the slow speed shaft, and the brake pedal shaft. Each shaft has coiled thereon Aa spring 12, which latter has a tendency tov open the bands when the means lfor contracting the same, as the various foot-pedals,

are released.

To adjust the reverse speed band it isnecessary to turn the nut 18, and to adjust the brake band the nut 14 must beturn'ed. To adjust the slow speed bandit is necessary to turn the shaft 9 which extends through the( ,.wall of the embossment previously referred to and terminates in a flat portion 1G adapted to be manipulated by means of awrench. The latter shaft is held in place by means of a lock-nut 17 adapted to be tightened against the wall of the einbossment.

To manipulate the nut 13y for adjusting the reverse speed band it is necessary to use va wrench of a particular form that. may be introduced into the aperture of the emboss-v ment and with its outer'end projecting outside of the embossment will allow at least a one-sixth of a'revolution to be made so `as to be able to take a new bite every time it is stopped due to its coming in contact with the edge 18 of the embossment. My wrench 19 consists of a strip of metal curved at one end in the plane of the strip asV shown at. 21

and formed at its end with a' recess 22 adapted to receive a hexagonal nut. A 1

The shank 23 of the wrench is disposed substantially aty right angles tothe center line of the recess 22, and it should be particularly noted that while the other end of the wrench for the purposes hereinafter mentioned must belarger than that portion of the shank adjacent tothe recess 22, andl while the front edge 24 of the wrench runs straight from one end to the other ofr the' same, the rear edge 26 instead of directly connecting the two ends of the wrench is indented as shown at 27, this indentation being just suflicient to allow a one-sixth of a turn to be made while engaging the nut/13 before the edge 18 of the transmission case is touched. l The nut 14 is comparatively easy to manipulate and the same end of the wrench may bey used for that purpose. Some difficulty arises in theturning of the slow speed adjusting screw 9. It will be realized that the latter screw, which extends through the wall of the embossment, is disposed in Y rather close proximity to the'- cylindrical' y Wrench is vturnedv ont of the plane of therperforations is ofimportance in so far as the extreme perforation 28 is used'for manipulating then-nt 17 which latter is in` theamost awkward'position, while the perforation which occupies a more unfavorable place on the wrench is used in connection with the ymore favorably situated ,end lG'of the slow speed adjusting screw. t

To allow any turn of thev wrench toI be executed with ease, unhampered by .the bulging out of the cylindrical portion .of the transmission case, the extreme end' of the latter, preferably along the line 31 lying between the two perforations 28V and: 2.9:

rlhe wrench is furthermore reduced in,y thickness at; its extreme end as shown at l32j sothat it may be used as a screw-driver for removing the screws 4t.

The advantages of: my wrench will:v be

readily undelSCOOd from, they foregoing dcscription. To removethe coverof the transmission case, the wrench.` is usedv as a screw,- driver by introducing the tapered portion into the slots ofy the screws 4i After the cover has been removed the nut 13 may be adjustedfby utilizing the recessed end offthefwrench, which due to theform of the shank allows a one-sixthl of' a turn to. .be executed before the edge 18 is 'touchedf and so that a new bite may be readilyv obtained.

The nut 14 is comparatively easy. to turn arrangement'- by means of the same end of the 'wrench To adjust .the slow speed adjustingV screw 9 ,the nut 17 is loosened by using the eX- treme end of ,the Wrench allowing the nut 17 to be lreceived in the perforation 28.

After the nut has been loosened, the end 1G` of the slow-speed adjusting screw is intro- ,ducedl into the perforation 29 of the wrench and may be readily turned, due to the fact that the extreme end of the Wrench is turned so as-not :to strike the bulging portion of the transmission case.

It will be seen that in this. manner .any y necessary adjustment may be readily'oarried' out by the yuse of one singley simple toolof the character described.

I claim': 1; As an yarticle of' mannfacture,.a wrench comprising a flat strip :of metal curved at .one end in the plane of the strip and formed' with an angular recess in saidi end', widened at they other end,y and formed with`r a nut re.-

cei'vingvy perforationnear; rsaidend and with a second perforation rearwardly of the first perforation, the front. edge of the Wrench;

being substantially stra-ight andi the back edge being drawn in to,v allow the first mens ltioned recess to be used@ inv connection withy anexisting mechanical arrangement. I

2.- Asan article of manufacture, awrench i comprising a flat strip of metal curved at' one end in theplane of the strip andy formed' with an; 'angul-arrecessvin said end, widened! atthe other end and' formed with a nut res ceiv-ingI perforation near saidf end ande with a second periteration rearwardly .of the first perforation, the latter end being bent "out of the plane of the wrench between the two perforations and the front edge of the wrench being straight andl the back. edge ,drawn in to"v alliowl the wrench -to perform-- varions functions in any existing mechanical MILES. MOrNrYnn;

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