US1441723A

US1441723A - Valve-spring compressor

Info

Publication number: US1441723A
Application number: US521974A
Authority: US
Inventors: Edward H Dewey
Original assignee: DANIEL F MORIARTY; FRANK A CHAMPLIN
Current assignee: DANIEL F MORIARTY; FRANK A CHAMPLIN
Priority date: 1921-12-13
Filing date: 1921-12-13
Publication date: 1923-01-09
Anticipated expiration: 1940-01-09

Description

J am 9, 1923. 1,441,723.,

E. H. DEWEY.

VALVE SPRING COMPRESSOR. FILED DEC.13, I921.

INVEN TOR.

7LWZ 6} gm A TTORNEY.

EDWARD H. DEWEY, OF CHIGOPEE FALLS,*1VIASSAGHUSETTS, ASSIGNCE FOURTH r0 FRANK A. CHAMPLIN,

AND ONE-FO URTH TO DANIEL 1*..MORIARTY,

VALVE-SPRING COMPRESSOR:

Application filed December To all whom it may concern:

Be it known that I, EDWARD H. DEWEY, a citizen of the United States ofAmerica, and a resident of Chlcopee Falls, in the county of .Hampden and State of Massachusetts, have invented a new and useful ring Compressor, of which the following 1s a specification.

My invention relates to improvements in tools or implementsfor use in detaching poppet-valves of internal-combustion engines, and consists of a double-headed ratchet baror lever, the heads of such lever being bifurcated and provided with upturned ends, a hook pivotally connected with said lever, and a pawl pivotally connected with said hook, the pivotal connections in each case being adjustable, and the parts and members being of peculiar construction, all as hereinafter set forth- The primary object of myinvention is to producea comparatively simple and inexpensive, yet strong, venient compressor for the valve-sprlngs of internal-combustion engines, which is capable of being applied to, at any suitable angle relative to the sides of, the engine, by hooking a member of such compressor over the manifold of such engine, without swinging or slippingout of engagement with the cup at the base of the valve spring.

Another object is to provide a device of this character which can readily be adjusted to meet that it will compress the spring evenly or uniformly.

Other objects and advantages will appear inthe course of the following description.

I attain the objects and secure the advantages of my invention by the means illustrated' in the: accompanying drawings, in

which-- V i i Figure 1 is a top plan of a valve-spring compressor which embodies a preferred.

' form of my invention; Fig. 2, a side elevation of said compressor, and, Fig. 3, a top plan of a modified form of construction.

Similar reference characters designate siinilar parts throughout the several views. Referring first to the preferred form of the invention as illustrated in the first two views, it will be seen that the comprises a bar or lever 1 having bifurcated heads. or forked

terminals

2 and 3,the outer durable, and con different conditions, and so '13, 1921. .Serial NO. 521,974.

ends of which terminals are turned upwardly to form lugs 4t, and saidlever also having'on the upper edge thereof two sets of ratchet teeth 5; a hook 6 pivotally connected at the base with said lever; and a pawl 7 pivotally connected at the upper terminal with said hook intermediate of the ends thereof.

Preferably the lever 1, instead of being straight, extends upwardly in both directrons from the transverse center thereof,'or

has two sections that form an obtuse angle with each other, substantially as shown. This is for the purpose of enabling the implement to be used on a car where the fenders are at an acute angle to the frame, and where it would be difficult or impossible to employ the implement if the lever were straight. The head 2 is wider than theheadfi of the lever 1, and the opening or slot, as 8, in said firstnamed head is correspondingly wider than the slot, as 9, in said secondnalned head, so that the former is adapted for large valve-stems and tappets, and the latter for small valve-stems and tappets.

The teeth5 on each side ofthe transverse center of t 'ielever 1 are directed toward the vertical plane of such center, and all are adapted to be engaged by the free terminal of the ratchet 7, inthemanner hereinafter explained.

There is a plurality of transversesopenings 10 through the lever 1 each side of the aforesaid transverse center, and a screw 11, which serves as the pivot between thehook 6 and said lever, is adapted to bereceived in any of said openings. At the bottom of the hook 7 is a. clevls or fork 12 that is adapted to fit over the lever 1 and the teeth 5, and to be connected with said lever bythe screw 11. There is a plurality of openings 20 in the-arms of the fork 12. A nut 13 is provided to retain theyscrew after being passed through one pair of openings 20 in the arms of the fork 12 and one or" the openings 10 in the lever 1. Thus it seen that the pivotal connection between the hook andlever can be changed or adjusted to meet different conditions. There is a plurality of transverse openings 1% through the hook 6 intermediate of the ends thereof, and a screw :15, which serves as the pivot between the pawl 7 and or inclined 11 in place to be connected with s I "lids-The screw 15 passesthrough the fork 16, thearms of which'are perforated to receive said screw, and one of the openings 14,. A nut 17 is provided to hold the screw 15 in place. v By changing the location of the screw 15, or transferring it from one open- Ting 14 to another, the pivotal connection between the pawl 7 and the hook 6 is changed. Thus provision is made for changing or ad-- justlng the position of the p votal connection between nieetdi'lferent conditions involved in'the use or application of 3 is introduced beneath the e to be compressed, and-the bar l isgrasped attheternnnal opposite to said head and the compressor. a v 'When the hook 6 lSCOllIlQCtQCl with the lever 1 1n the manner upper terminal of the hook 6 is placed over the manifold,the head cupof the spring '7 forced downwardly, with the screwdl. as

, 15and thefree over the left-h 4: engages one or a fulcrum for said bar, until' the spring is suff ciently compressed.

As this operation takes place the pawl 7 swings onthe screw terminal of saidpawl moves transverse center of the lever-1, and finally automatic." The valve-stein at this time is inthe slot 9, and the lugs eat the outer end of the "head ,3 engage 'cup, either during the comfthe removalof the valve. VVhen it IS desired to remove the compressor,it 1s 7 the free terminal of the lever 1 sufficiently to enable the pawl '7 to be released from the toothl5 with which itis engaged, swing said pawliipwarclly on the screw 15, permit said lever toswing on the screw ti on a-nd to' the extent required to release the springfand remove the hook ,6 from the manifold.

The manifold, valve spring cup, and

' other engine parts and members herein men'- tioned are too well known toneed to be illus-w 'of my 1 inthe manner'herein .the former: does not placed n positlon over it is possible to manipulate this implement .that the pawl 7 to engage the teeth 5 at ,;the' right of the the pawl 7" and the hook 6 to 1 stantially the same as that already described.

illustrated, the application or operation of the compressor is asfollows The curved hook 6 and the lever 11in different made, but that the parts are interchangeable 7 so that either end of said lever-canbe employed.

nd set of teeth 5 toward the l a perforated terminal that is receivable in said teeth, thus locking the parts and retaining the spring under com PTBSSi OILLthG movement of the pawl being struction, and arrangement of some or all th t d f th of the parts of this device may be made with- ,cup, whichlatter is seatedIon said head, and v so preventthelatter from slipping out from "beneath said pressing. operationor while the spring is", v I held under compression for s e to secure by 45 simply necessary to depress said hook and adapted to engage the serra- 11 in the direc-,

opposite sides of the transverse center of with the lever with'one hand, especially in view of the fact antomatically engages the teeth 5 as the free end of the lever 1 is depressed. 1 v I If it be d'esiredto use the headQ instead 7 of the head 8, the nut 13 is removed from the screw 11, the latter-is withdrawn, the hook 6 is turned about and its fork 12 placed over the lever 11 adjacent to one of the openings "10 atthe left of the transverse 7 center of said lever, said screw is reinserted in said fork and passed through the required opening, and said nut is returned to: place on the screw. The pawl 7 is now in position aforesaid center. The operation of the compressor under the new arrangement 1S sub- Tt is clear fromthe, foregoing, notonly that any required adjustment between the 1 by locating the screw 7 openings :10 ina set-and be tween thepawl 7 andsaid leverby locating the screw 15 in different openings 14% can be In the modification illustrated in Fig. 3, a bar 18 is shown which ,iswider thanthe bar 1 and has alongitudinal slot 19 therein between the heads .2 and 3, and the hook 6. is made withoutthe fork 12, but instead has I said slot. Otherwise. this construction is similar to the first, and the operation of the same is not materially different. a ''More or lesschange in the shape, size, conoutdeparting from the spiritof my invention or exceeding the scope of what is claimed. i I

What I :claim as my, inve11tion,-and de- Letters Patent, is-

1. A valve springcompressor comprising a forked and serrated'lever, amanifold-en. gaging hook pivotally connected with said lever, and a pawl pivotally connected with tions in said lever.

2. The combination, in a valve-spring compressonwith a lever having forked terminals with upturned lugs at their ends, and provided with two sets of ratchet teeth on said lever, of a. 'manifold-engaging hook, means to connect'said hook pivotally with said lever either side of said center, and a pawl pivotally connected with said hook and adapted to engage the teeth in the set that is on the opposite side of said vcenter to that where said hook is pivotally connected with said lever. i

3. The combination, in a valve-spring compressor, with a lever havingforked terminals with upturned lugs at their ends, and provided with two sets of ratchet teeth on opposite sides of the transverse center of said lever, of a manifold-engaging hook, means to connect said hook pivotally with said lever either side of said center, a pawl adapted to engage the teeth inthe set that is on the opposite side of said center to that where said hook is pivotally connected with said lever, and adjustable means pivotally to connect said pawl with said hook.

4. The combination, in a valve-spring compressor, with a lever consisting of two sections that form an obtuse angle with each other, said lever having :torked terminals with upturned lugs at their ends, and provided with two sets of ratchet teeth on opposite sides of the transverse center of said lever, of a manifold-engaging hook, means to connectsaid hook pivotally with said lever either side of said center, and a pawl pivotally connected with said hook and adapted to engage the teeth in the set that is on the opposite side of said center to that where said hook is pivotally connected with said lever.

5. The combination, in a valve-spring compressor, with a lever provided with forked terminals having upturned ends, and also, on opposite sides of the transverse center of said lever, with ratchet teeth on the upper edge and openings which extend through the sides thereof, of a manifoldengaging hook, pivotal means for connecting the base of said hook with said lever through any of said openings, and a pawl pivotally connected with said hook intermediate of its ends, and adapted to engage any of said teeth.

valve-spring compressor comprising a forked and serrated lever having a longitudinally-extending slot intermediate of the ends thereof, a manifold-engaging hook having the lower terminal inserted in said slot and pivotally connected with said lever, and a pawl pivotally connected with said hook and adapted to engage the serrations in said lever.

7. The combination, in. a valve-spring compressor, with a lever having forked terminals with upturned lugs at their ends, and a longitudinallvextending slot intermediate of such ends, and provided with two sets of ratchet teeth located on opposite sides of the transverse center of said lever, said teeth being formed on the upper longitudinal edges of the portions of the lever separated by said slot, of a manifold-engaging hook having its lower terminal in said slot, means to connect said hook pivotally with said lever either side of said center, and a pawl pivctally connected with said hook and adapted to engage .the teeth in the set that is on the opposite side of said center to that where said hook is pivotally connected with said lever.

ED /VARD H. DElVEY. Witnesses F. A. CUTTER, F. A. CI-IAMILIN.