US965890A - Pipe-wrench. - Google Patents

Description

P. T. GREENWOOD.-

PIPE WRBNGH.A

APPLICATION FILED AUG. 12, 1909.

QQQ, Patented Aug.2,1910.`

i llll' Bridgeport, in the the combination and arrangement Wiseis formed integral with said head. EX-

tendlng through this head trom top to the lbottom thereof is a transverse opening` a lijvhichare provided with ribs 8 that fit with- :m'the Ways 5, so that it ,will be clear that Ving into these Ways`10.

`same time he capable ol a lengthwise play i to be explained.

straatnamen.

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1' 'o all whom it may concern:

Be it known that l, lPnncY 'lh Gnnnnivoon, a, citizen of the United-States, residin at county oit Fairfield and State of Connecticut, have invented certain new and useful improvements in Pipe- Wrenches; and l do hereby declare the tollovving to be afull, clear, and enact description oit the invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to pipe wrenches, and as for its object to provide a simple and. eflicient device ot this description which may be readily adjusted and operated, and with these ends in view my invention consists in of parts hereinafter fully set forth and 'then particularly pointed out in the claims which conclude this description.

In the accompanying drawing Figure 1 is a side elevation of my improved Wrench- Fig.2 is a plan v:iew---lligu 3 'is a section at the line w, au, of Fig'. 1-li`iez i a' detail plan View oi the stationary jaw, and Fig. 5 a :liront elevation et the same.

Similar numerals olf reference denote like parts in the several ligeros hf the drawing'.

1 is the head or body portion oli' the wrench having formed integral therewith a hand lcver"` 2, and 3 is a stationary which lilie- Within the sides of which are `formed guide Ways 5, and 6 is the movable jaw which has formed on its rear a rack bar 'i' the sides oi said rack bar will be guided Within saidv Ways and Will be capable ot play.

-9 is an openingr cut throughtho head 1 from side to side, the side Walls ot this openinghaving cut therein Ways 1 0 shown in dotted lines at Figs. 2 and a, small gates 11 being cut in one side of said head and lead- 12 is a Worm provided at opposite ends With short hubs 13 which latter are introduced through the gates l1 into the ways 10, so that the Worm may revolve and at the Within said Ways' for the purpose presentlyr itpeeiication of Ztetters Patent.

application :filed .august la,

,any suitable position.

14 is a block Within the opening` 9 and `ltatenterll einen 191e.. ieee. einer ne. massa ated to adjust the position of the movable jaw with respect te the stationary jaw, and the engagement oi the Worm with the rack bar will be insured by the impact of the spring pressed block-let. By grasping the Worm and pulling the same back against the block 1li the Worm will thereby be disergaged from the rack bar and the latter may be readily removed ii desired; also coarse adjustments of the movable jaw may be, eit-y t'ected by disengaging the Worm and rack har and then moving the latter bodily to 'lhc ribs tl on the raclrbar lia-vea slight play Within the Ways so as to permit ot' a slight back-lash lon the part oli Athe movable jaw common in pipe `Wren cl les. l

llavi n p; thus described my invention what l claim as new and desire to secure hylietters Patent is :M

1. In a pipe Wrench, in combination with the head, formed with a stationary jaw, a rack bar at the rear end' of the :movable jaw', said head being provided fvvith a lateral opening' and further provided with grooves or tracks at the opposite sides et said lateral opening, a Wormlin engagement with said. rack-bar, retainingn hubs integral with. said worm and operating insaid grooves or tracks to allow said worm to be moved toward or away from said rack-bar, a block slidingly mounted within said lateral opening' andhaving` its forward tace concave and conformably embracing said W'orn'i, and spring elements which act against the rear face of said bloelr, said spring elements seatingat one end on the lrear face or' the block and at their opposite ends on the rear end wall of the lateral opening, whereby said Worm is normally forced in Aengagement formed 'with a stationary jaw, a movable jaw carried by the head, said head being provided with a lateral opening extending 4through the opposite sides of the head, the

l nions at its ends disposed in said guideways and adapted to have its trunnions introduced throughsaid gateways, a block having its outer face concave to embrace said Worm, springs to engage the rear Yface of said block and therear wall ofsaid lateral opening, said springs being adapted to force said block against said worm which latter normally engages the movable aw.

3. A plpewrench, comprised of ahead, a stationary jaw, and 'a movable jaw, said head Ibeing provided with a lateral opening and With track ways in the opposite side walls vof said lateral opening, gateways in one side of the head which connect with said slideways, a Worm engagin jaw and having hubs, said hu s being adapted to be admitted to said slideways through said gateways, a block contained in said lateral opening having its outer face concave to embrace the periphery` of the said worm and springs adapted to engage the block to hold same in engagement With the worm.

In testimon. whereof I aiix my signature in presence o two Witnesses.

PERCY. T. GREENWOOD.

Witnesses:

VF. W. SMITH, Jr., M. T. LONGDEN.

the movable

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