US1239551A - Shaft-rotating means. - Google Patents

Description

W. H. YOST.

SHAFT ROTATNG MEANS.l APPLICATION FILED DEc.9. I9I`2.

Patented spt. 11,1917.`

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2 SHEETS--SHEET l.

w. H. YosT. "SHAFT ROTAHNG MEANS.

APPLICATION FILED DEC.9. 1912.

Patented Sept. 11, '1917.

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WINFIELD HANCOCK YOST, OF MONTREAL, QUEBEC, CANADA.

Y SHAFT-ROTATING MEANS.

Specification of Letters Patent.

Patented Sept. 11, 1917;.

Application led December' 9, 1912. Serial No. 735,798.

To all whom t may concern Be it known that I, WiNrmLD HANCOCK Yos'r, a citizen of the United States, residing at Montreal, Province of Quebec, Canada, have invented certain new and useful Improvements in Shaft-Rotating Means; and l do hereby declare that the following is a full, clear, and exact description of the SZLIIIQ.

This invention relates to shaft rotating means of the type in which rotation of the shaft is effected by an oscillating or reciproeating device adapted to alternately engage with and disengage therefrom, and further to manually operated devices of the above type in which the manually operatedmember is adapted to remain out of operative relation with, and adjacent to the shaft when the device is not in operation.

The invention has for anobjectfto provide a simple and easily adjusted and operated device of this type whereby the shaft may be rotated in either direction as desired.

Figure 1 is a plan view of the device, the shaft to vwhich it is applied being shown in transverse section.

Fig. 2 is aside elevation thereof,

Fig. 3 is a vertical section on the line 3 3 Fig. 1.

Figs. 4 and 5 are perspective views respectively of the saddle carrying the lever and the arm on which it is mounted.

The shaft to be rotated is shown at 1 and may be employed as the brake mast of a car, a door operating shaft or applied to other purposes. A

Secured upon the shaft by suitable means as the key 2 is an equal faced ratchetlwheel, or star4 wheel, 3 which may be further secured to the shaft. by means of a bolt 4f passing through the elongated hub of the ratchet wheel. This ratchet wheel is adapted to be engaged and operated to rotate the shaft by a reciprocating or oscillating lever or handle 5 fulcrumed between its ends in a manner to bepresently pointed out, the portion thereof between the fulcrum and ratchet wheel comprising a reversible double faced pawl 6.

This lever 5 is carried upon a bracket arm or carrier pivoted at one end upon the shaft, this carrier as here shown being formed by a two piece strap 7 loosely encircling the elongated hub 8 of the ratchet wheel, a flange 9 on the hub preventing longitudinal displacement of the carrier.

In operation the lever is adapted to alternately engage with and disengage from the ratchet as it is moved bach and forth and rotate the shaft step by step, the lever being' mounted by means of a universal joint in a manner both to have lost motion between itself and the carrier, to cause it to engage and disengage upon reciprocating, and also to permit of the shifting thereof to reverse the position of the pawl with respect to the ratchet wheel to enable the ratchet wheel to be rotated in either direction as desired, the position of the lever when the shaft is being rotated in different directions being indicated respectively by the full lines and chain lines in Fig. 1.

As here shown a saddle 15 is mounted on the end of the carrier 7 by means of a bolt 16 passing through registering perforations 17 and 18 in the carrier ends and saddle respectively, the saddle straddling the end of the carrier and being pivoted to swing in a plane common to the axis of the shaft. Projecting upwardly from the saddle and integral therewith is a hollow boss 19 upon which the lever vis fulcrumed on an aXis parallel to the shaft axis, the lever being retained in position upon the boss by means ofthe bolt 20 with the nut and washer 21 thereon.

To limit the lost motion between the lever and carrier to that necessary to cause the pawl to clear the ratchet wheel a lug 29. is formed on the lever and engages the front of the saddle when the pawl has cleared the ratchet wheel, which lug may be duplicated as shown so that the lever may be placed in position with either side thereof turned to ward the saddle.

In operation the lever is swung upon its universal joint until it engages the ratchet wheel, the engagement of the saddle 15 with the upper face of the carrier limiting the movement of the lever on the bolt 16 when it is in line with the ratchet wheel. The lever is then reciprecated and alternately engages with and rotates the ratchet and disengages and moves back independently of the ratchet, the lever first swinging on the boss 19 until the lug 22 bears against the saddle and causes the lever and carrier to swing together on the shaft.

If the direction of rotation of the shaft is to be changed it is only necessary to swing the lever on the bolt 1G untilvit clears the ratchet when it may be shifted from one position to the other as will be readily seen from the chain line position of the lever inV Fig. l the lug 22 assumes the proper position with respect to the saddle to permit the limited lost motion when the lever' is in either position.

l/Vhen not in use the lever hangs alongside the shaft as shown in dotted lines in Fig. 9.

It will be noted that the saddle 15 in addition to its function as a member' of the universal joint, also serves to brace the ends of the strap forming the carrier.

W'hat I claim is as follows:

l. rIhe combination with a shaft, of a ratchet wheel fixed thereon, an arm pivoted concentrieally thereto, a saddle pivoted upon and straddling the en d of said arm, and a lever fulcrumed between itsends upon such arm, such lever having one end constituting a lreversible pawl adapted to engage and rotate the said ratchet wheel in either direction and means providing a universal `joint connection between such lever and arm, such means including a saddle pivoted upon and straddling-the end of the said arm and having the lever pivotcd thereto, for the pur- Y A pose set forth.

2. The combination. with va shaft and a toothed wheel upon the shaft, of an arm piv- `leveris permitted two swinging and operative movements independently of the arm and in two distinct directions with relation to such arm.

3. The combination with a. shaft, of a carrier and a lever supported by said carrier and adapted to rota-te the shaft in either direction, such lever having a swinging movelment transversely of the shaft and inde- Uopies of this patent may be obtained for pendently of the carrier and a swinging movement in the longitudinal line of the shaft and independently .of the carrier.

4t. The combination with a shaft, of a carrier and a lever supported by said carrier and adapted to rotate the shaft in either direction, `such lever having a horizontal swinging movement independently of the carrier and a vertical swinging movement independently of the carrier.

5. The combination with Va shaft, of a ratchet wheel Xed thereon, an arm pivoted oted concentrically-thereto, a lever Vadapted Y to engage with and rotate said ratchet wheel in either direction and projections Von opposite surfaces of` the lever, such lever being adapted to be pivoted to the arm with either of said surfaces adjacent theretoV and with one of said projections infposition to engage with such arm. Y

7. The combinationf .with .a shaft, of a rachet wheel fixed thereon, an arm pivotedy concentrically to the shaft, a pivot carried by said arm and disposedV transversely to the shaft, a member .mounted upon said pivot to turn thereon, a second pivot carriedhy said member and disposed substantially parallel to .theshaft and a leverinounted upon the second pivot to turn thereon, such Ylever being adaptedfto engage andA rotate said ratchet wheel in either direction.

In testimony whereof, I 4havesigned my name to this specification, inthe presence of two-subscribing witnesses.`

WINFIELD HANCOCK YOST.

Vitnesses: f

ALEX Comun, JAMES A., FRASER.

ve cents each, foyY addressing .the ,Commssionernflatents. Washington, D. C.

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