US1334195A - waelti and e - Google Patents

Description

0. N. WAELTI AND E. F. ,CHESNEY.

AUTOMOBILE EXTRACTOR. APPLICATION FILED JUNE 11, 1917..

Patented Mar. 16, 1920.

2 SHEETS-SHEET I.

0. N. WAELTI AND E. F. CHESNEY.

AUTOMOBILE EXTHACTOR. APPLICATION FILED JUNE II, 1911'.

0 u u 2 w W21 M 6E 3%. am 06 d8 d Mg UNITED STATES PATENT OFFICE.

OTTO N. WAELTI AND EDWARD F. GHESNEY, 0F SEMANS, SASKATCHEWAN, CANADA.

AUTOMOBILE-EXTRAGTOR.

Application filed June 11, 1917.

To aZZ whom it may concern:

Be it known that we, OTTO N. VVAELTI and l lownno F. Crrnsnnx, both citizens of Can ada, residing at Semans, in the Province of Saskatchewan and Dominion of Canada, have invented a new and useful, Automobile- Extractor, of which the following is a speciiication.

This invention relates to motor vehicle crabs or devices adapted for emergency purposes for application to a motor vehicle to adapt said vehicle by means of its own power to extricate itself from a mud hole or other difficult place when the driving wheels of the machine are unable to obtain "the necessary traction on the road surface for that purpose. 1

An object of the present invention is to provide a simple, strong and reliable crab and cable which crab is adapted to be firmly secured to one of the driving wheels of the vehicle in an expeditious and easy way,

requiring no alteration or adjustment of any part of the motor vehicle itself. The device when detached from the driving wheel may be readily carried in the tool box or one of the compartments of the machine.

With the above and other objects in view, the invention consists in the novel construc tion, combination and arrangement of parts, as herein described, illustrated and claimed.

In the accompanying drawings,

Figure 1 is a vertical section taken transversely through the hub of one of the driving wheels of a motorv vehicle and the parts immediately adjacent thereto, showing the improved motor crab in its applied relation thereto.

Fig. 2 is an. outer face view of the crab.

Fig. 3 is an inner face view thereof.

Fig. 4 is a detail view of one of the anchors or stakes.

Fig. 5 is a diagrammatic plan view illustrating the method of using the apparatus.

The motor crab comprises a cable winding drum 1 of cylindrical formation and of suitable external diameter around which is wound a flexible cable 2 which is used for extricating the motor vehicle from a mired or stalled position. The drum 1 has at its outer side a flange 3 which prevents the cable 2 from working off the drum.

In connection with the drum 1, we employ a circular series of spider arms 4 which also constitute guards to prevent the cable 2 Specification of Letters Patent.

Patented Mar. 16, 1920.

Serial No. 174,160.

from working oil the drum 1. The arms "1-,

wardly extending portion 11 which is iusorted through a hole extending transversely through the drum 1, said portion 11 of the spider arm also passing through an abutment ring 12 whichbcars against the outer side of the drum, the outer end of the portion 11 of the spider arm being threaded to receive a clamping bolt 13. Each spider arm is also provided with an inwardly cxtending portion 14: which passes between adjacent spokes and also pass through a wedge shaped spoke block 15 so that the portion -11: of each spider arm is maintained in a certain fixed relation to the spokes of the wheel.

Arranged upon the inner side of the wheel aresemicircular clamping members 16 through which the portions 14: of each of the spider arms are inserted and secured by means of wrench nuts 17 or nuts having operating handles 18 to facilitate taking off and applying said nuts. Each of the semi-circular clam pin members 16 has a cushion 19 of felt or like material, se cured to the inner face thereof to bear against thespokes 8 and prevent marring the finish thereof. The spoke blocks 15 are not fastened directly to the wheel but are held in place between the semi-circular clamping members 16 and the inclined spider arms 1-, the latter in turn bearing against the outer hub plate 5 as shown in Fig. 1.

The way of using the apparatus is illus trated in Fig. 1 wherein it will be observed that, in the preferred embodiment of the ill stored in a compartment or tool box of the motor vehicle. The arm 21 has a long tapering point adapting it to be driven into the road surface, while the other arm 22 is provided adjacent to the pointed extremity thereof with an inclinedoflset extension foot 24 which serves to limit the penetration of the arm 22 into the road surface by resting on the road surface; This prevents the tilting of the anchor when stress is brought to bear thereon by the cable 2. The rear. ends of'the cable 2 are securely fastened to and wrapped around the drums 1 on the rear driving wheels. The opposite runs of the cable are then passed around pulleys 25 secured to the extensions or feet 2 1 of the anchors. The medial portion of the cable 2 passes aroundanother pulley 26 having a hook 27 which ,may be slipped over the front axle of the vehicle as shown in Fig. 5.

From the foregoing description taken in connection with the accompanying drawings,

it will now be seen that with the apparatus arranged as shown in Fig. 5, upon transmitting motion to the driving wheels of the vehicle, the opposite side portions of the cable 2 will be wound around said drums thereby causing the vehicle to move toward the anchors 20. 7 Thus, the vehicle isenabled to extricate itself from a mired or difficult position under its own power; In bad seasons, when muddy roads may reasonably be expectedto be encountered, the drums may be allowed to remain on the hubs .of the driving wheels. At other times, said drums may be easily and quickly removed from the wheels and stored in the vehicle. The above advantage of the invention resides in the ease and rapidity with which the device maybe applied to and removed from the driving wheel ofa vehicle, only a few minutes being required for that operation. The device is also compact and of sufiicient strength to withstand all stresses which may be imposed thereon.

We claim A motor vehicle crab, comprising a drum upon which a cable is adapted to be wound, a flange at the outer side of the body of the drum, said drum having a circular series of openings extending therethrough parallel to the axis of the drum, a circular series of inclined spider arms having outer end portions inserted through the holes in the drum and also having inner end portions parallel. to the axis of the drum, intermediate portions of said arms being transversely ofiset to form the inner flange of the drum, a cushion member adapted to bear against the inner faces of the wheel spokes, clampingmembers adapted to bear against said cushion member, and having holes to receive the inner end portions of said spider arms, clamping nuts on the inner ends of said spider arms, a wedge shaped block carried by each spider arm and adapted to fit between a pair of the spokes, an abutment ring bearing against the outer face of the drum and formed at points remote from the axis of the drum with holes to receive the outer ends of said spider arms, and clamping nuts threaded on the outer ends of the spider arms and bearing against said abutment ring.

In testimony whereof we aflix our signatures in presence of two witnesses.

OTTO N. VVAELTI. EDWARD F. CHESNEY.

Witnesses:

. JNO. W. CALLUM,

M. MILLIKEN.

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