US1348570A - Valve-spring lifter - Google Patents

Description

P. A. KNIGHT.

VALVE SPRING LIFTER.

APPLICATION FILED SEPT-18, i919.

v1,348,570. Patented Aug. 3, 1920.

asst-er...

PAUL ALBERT smear; or Barnabas; MARYLAND.

varivn-srnrne LIFTER.

ntense;

To aZZiv/wm it may concern Be it known that 1, PAUL A. Amelia, a

citizen of the United States, residing at. Baltimore, in the State of Maryland, have invented certain new. and usefullmprovements in Valve-Spring Lifters; and I do declare the-following to be a full, clear,-and exact description of the invention, such will enable others skilled. in theart to which it appertains to make and use the same This invention relates to improvements in tools, and it has more particular reference to a valve-spring lifter. It is customary in grinding automobile valves to employ a tool of some kind to raise the valve spring to permit ease in inserting or removing the usual valve spring pin. Various types of tools have been employed for this purpose. That type which is generally well known, includes an engine engaging member having a chain connected thereto, and a bar or lever pivotally secured, in some manner, to the free end of the chain. It is at this point of pivot where the tools now in use are inferior.- In other words, there is great liability of the bar slipping with respect to its point of pivot which of course makes these types of tools unhandy to use and not entirely effective in use.

It is therefore the object of this inven tion to overcome these circumstances, and to provide a valve spring lifting tool in which there is less liability of the parts slipping.

Another object of the invention is to provide a valve-spring lifter which is provided at its opposite ends with means to permit it to be effectively used with valve stems of difierent thicknesses.

A further object of the invention is to provide a valve spring lifter which is extremely simple in construction, strong, durable, ef fective in operation, easy to manipulate and extremely inexpensive to manufacture.

Other objects and advantages may become apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is an elevational view of a portion of an engine, illustrating the manner of using my improved valve-spring lifter.

specifications Letters Patent;

Fig.2 is' an enlarged perspective view of Patented Am. 31, man. I Application filed. SeptemherlB, 1919. Serial No; s'zaaeo.

principal details of the device as constructed in accordance with my invention.

Fig. 3 is an inverted perspective-view of the operating lever or bar. b Fig- 4 is a top plan view of the operating In the drawings, wherein for the pur pose of illustration is shown a preferred embodiment of my invention, the numeral 1 designates a portion of an automobile engine. of the usual construction, from'which my device is suspended and operatedinthe well known manner. I

.My improved valve spring lifter comprises a flat metal bar 2 which is provided at its opposite ends with slotted heads 3 which are adapted to straddle a valve stem. It is to be noted that the slot in one head is larger than the one in the other head, thus permitting the heads to straddle valve stems of different diameters. Attention is directed at this point to the fact that the central portion of the bar is substantially straight while the heads 3 are laterally offset in opposite directions. This construction forms a substantially S-shaped bar which is much more advantageous than the usual straight bars employed because it will not interfere with the users hands when a valve spring pin is being removed or inserted. Emphasis is to be laid on this constructional feature. bar is provided in its under side adjacent the oifset heads with a plurality oflongitudinally spaced grooves at which serves a purpose to he hereinafter described.

Longitudinally slidable on the lever 2 is a fulcrum member or stirrup 5. As shown,

this stirrup is'preferably triangular in configuration and is bent from a single length of stiff wire. To this end, the opposite ends of the wire are bent laterally in the same direction and converge as at. 6 and 7 andthe extremity of the portion 6 is hooked or bent to form an eye 8 which sur "ounds the other portion 7. The last named end portion 7 is extended beyond the eye 8 and its extremity bent to form a hook 9 which is adapted to engage in a link of the chain 10. As before stated, this stirrup 5 1s slidable or shiftahle along the lever 2 and is adapted to be seated in one of the transverse grooves 4 whereby a fulcrum for the lever 2 will be had. Employment of this type of stirrup permits the The bar to be easily slipped out so that it may be.

chain 10 and the stirrup seated in one of i the grooves l in the bar 2 which may now be actuated in the well known manner to lift the valve spring.

In the construction set forth it will be seen that when the stirrup 5 is seated or placed in one of the grooves 4 there will be little or no possibility of the lever 52 slipping lengthwise through it. y

it is to be understood that the form of my invention herein shown and described is y to be taken as a preferredform of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the A valve spring lifter comprising an eniiu 1,348,570

invention or the scope of the subjoined claim. I

Having thus described my invention, what I clalm 1s:

gine engaging member, a chaincarried by said member, a triangular link detachably connected to the free end of said chaima fiat metal bar slidable through said link, the intermediate portion of the bar being straight'and the ends being enlarged to provide' heads which are laterally offset in opposite directions and are slotted to permit them to straddle a valve stem, said bar being 40 further provided in its underside adjacent the offset ends with a plurality of longitudinally spaced transverse grooves to permit 7 said link to be seated therein, whereby when one of the slotted heads is permitted to straddle a valve stem beneath the spring and the other end pushed down, the spring will be lifted.

In testimony whereof I have hereunto set my hand.

PAUL ALBERT KNIGHT.

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