US1421152A

US1421152A - Key placing and removing tool

Info

Publication number: US1421152A
Application number: US379936A
Authority: US
Inventors: Harry L Berman
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-05-08
Filing date: 1920-05-08
Publication date: 1922-06-27
Anticipated expiration: 1939-06-27

Description

Hi L.. BERMAN.

KEY PLACING AND REMOVING'TOOL.

APPHCATION FILED MAY B, 1920.

.Pateted June 27, 1922.

f stem.

t ,AFFICE'Q HARRY ijf. Biani/IAN, or noxisumr,k MASSACHUSETTS. f

IKEY-PLACING AND REMOVING TOOL. l

To all whom, t may concern: v

Be it knownthat I, HARRY L'BERMAN, a citizen of the United States, residing at Roxbury, in the county of SuffolkV and'State of Massachusetts, have invented'certain new and useful Improvements in `Key Placing and Removing Tools, of which the following is a specification.

` The present invention relates to tools and more particularlyV to such adaptedto facilitate the placing and removal of keys or pins used in machinery. to limit movement of one element with respect to another or to cause the elements to move in unison.

While the invention is particularly well adapted for use in the placing andremoval of keys, or pins, such as are used' in connection with the intake and exhaust valves of internal combustion engines, where the valve spring seat is held intooperative relation tothe valve stem, the tool may be used for other purposes Where it is desirable to grasp a relatively small key or pin and guide it into or out of operative relation to anrelement or elements v y The principal obj ectsof the invention are to provide a tool which may be quickly operated to eifectivelyhold `or Vrelease the key possible to get atthe work by hand or by tools of an ordinary character; and, a tool i adapted to" hold keys or pinsr `of different shapes, sizes', etc.' Inthis connection, itis pointed out that keys or pinsof this character are usually 'rectangular` in cross section, circular in cross section, or are of U- shape, the stems of the U-shaped key being received by slots cut laterally inthe' valve Other objects and advantages of the'invention are to provide a tool which is simple in construction and assemblage and which will remain in good repair for a considerable length of time, and a tool which may beoperated, held in one handl of the user and operated by the thumb or` a Afinger of the Y holding hand.

Further objects and advantages of the -vention will appear in the following detailed description, taken in connection with Specification of LettersPatent.v

'keys or pins.

Patent-erratum at, 1922.

' Appiication md May`v 8, 1920.A vserial No. 379,936.`

fthe accompanying drawings, forming a part of thisfspecilication, and in which drawings: Figure l is a plan view of a tool embodying the principle of the invention, showing a key or pin gripped thereby.

` "Figure 2 isa central 'longitudinal sectional view through the same.

'Figure 3 is a fragmentary enlarged sectional view of the gripping end portion of the tool, showing the jaws in a closed position,

Figure 4 isa similar view showing the *jawsv in an open position.

AvFigure 5 is an end View of the tool look/- ing toward the jaw ends.

Figure 6 is an elevation of one of the jaws looking toward that 'face which in practice `confronts a similar face of the other jaw.

In the drawing, where similar charactersA `refer to similar parts throughout the views,

A designates a relatively long main body portion,` preferably of tubular formation; "B a handle atene end portion thereof; C a kpair of co-acting jaws; D a device-for normally urging said jaws away from one another; and E means for imparting vInovement to said jaws. t

` The main bodyI portion A may be kconveniently formed from a piece of tubular materialand is made relatively long so that it may be readily moved between closely spaced elements, soas to get at out ofthe way7 places, such as between piping, shafting, pumps, etc., which are so often in close proximity to elements adapted to receive This main body portion yis tapered exteriorly at onel end, as indicated at 7 so that the line of vision may be directed along the tapered surface of the body Aand converge at a relatively small acute angleforwardly of and at the axis of the tool,

thereby permitting the operator to see the drawings.

fronting faces so formed as to provide on 'each confronting face a substantially V- shaped groove 9 extending longitudinally of the jaw to receive and gripvkeys of angular or circular cross section longitudinally of the jaws, this groove terminating at an abutment 10. The confronting faces are so f o-imed as to be in diverging relation from the outer` ends of the jaws, inwardly, when the jaws are in close relation, as clearly shown in Figure 3 of the drawing, so as t0 grip the base of U-shaped keys transversely of the jaws. If desired an arcuate guide pin 11 may be carried by one of the jaws extending from its face confronting the other jaw, which latter is provided with an arcuate way 12 into which the pin 111 extends.

In the example sho-wn, the device D may consist of an expansion spring or in other words, .a spring having a coil 13 and stems 14 extending tangentially from the coil, these stems and portions of the coil being received in recess 15 formed in the confronting faces of the jaws.

The means E is provided for imparting movement Ato the jaws so as to effectively grip or release the key or -pin and in the example shown comprises a rod 16 reciprocable in the bore of the main body A; and expansion vspring 17 at the handle end portion of the tool; and a finger piece 18 car- ^ried by the rod 16 and extending exteriorly of the body A, as through slot 19 into close proximity to the handle B. The coil spring 17 may abut against the end portion of rod 16 and the end of the bore 8 of handle B, thus urging the rod 16 toward end portion of body A, but limited in its movement by finger piece 18 engaging the -end of slot 19 as is obvious from an inspection of the In order to operatively kconnect the rod 16 with the jaws C, the vend portion of the rod opposite to the handle is reduced laterally, as indicated at 20, wherein the inner end portions of the jaws C may rock, oppositely disposed, laterally extending lugs 21 beingl provided at vthe reduced end portion of the rod and y.received in ways 22, formed in the jaws C. These lugs 21 act as a pivot for the jaws,

The springD urges the jaws into frictional engagement with the bore ofbody A so that when they are retracted from the position shown in Figure 4 they move toward one another so as to effectively grip a key or pin, no matter whether the lsame is rectangular in cross section, circular in cross section or of 'U-shape, as hereinbefore described.v If the pin extends longitudinally `of the jaws as shown in Figure '1 its Aend portion engages abutment 10 thus aiding `in forcing the kpin into place. If a U-shaped pin or key is used the base of the ,pin or key may be received in the space lindicated at 23 engaging .the abutment 10 when being forced into place and readily pulled out, when removal is desired, by the formation of the confronting faces diverging, as hereinbefore described.

Changes indetails 4may be made without departing from the spirit or scope of my invention; ibut,

I claim:

1. A tool for placing and removing keys comprising in combination, a main body portion having a bore, a pair of cooperating jaws extending into the bore of said main body portion longitudinally of the axis thereof, 'said aws having their confronting faces each l.provided with a substantially V shaped groove lextending longitudinally of the jaw to receive .and grip keys of angular or circular rcross section, longitudinally of the jaws, said confronting faces .being in diverging relation from the exposed end portions of the jaws, inwardly, when the jaws are in close relation to grip the base of U-shaped keys `transversely of the jaws, and means for operating said jaws.

2. In a tool for placing and removing keys, the combination of a pair of cooperating jaws movable toward and from each other, said jaws having their confronting faces each provided with a substantially V-shaped groove extending longitudinally of the jaw to receive and grip keys of angui lar or circular cross section longitudinally of the jaws, said confronting faces being formed so as to be in diverging relation from the end portion of the jaws inwardly, when the jaws are in close relation, to receive and grip the base of U-shaped keys transversely of the jaws, and means for moving said jaws toward and from each other.

8. In a. tool for placing and removing keys, t-he combination of a pair of cooperating jaws movable toward and from each other, said jaws having their confronting faces each provided with a substantially V-shaped groove extending longitudinally of the jaw from the end inwardly and terminating at an abutment, to receive and grip keys of angular or circular cross section longitudinally of the jaws, said confronting faces being arranged in diverging relation from the end portion of the jaws inwardly, when the jaws are in close relation and terminating at said abutment, to receive and grip the base of U-shaped keys transversely ofthe jaws and means for moving said jaws toward and from each other.

4. A tool of the class, described, comprising a tubular body portion, a rod reciprocably mounted in the bore of said tubular body, a pair of jaws pivotally -mounted on an end of said rod t-o extend from .said tubular body, spring means normally urging said rod and jaws outwardly of 'said tubular body, and -means to force said lrod into `said body for closing said jaws.

5. A tool of the class described, comprisg ing a tubular supporting body, a handle mounted over one end of said tubular supin said tubular body adapted for normally 'forcing said rod and aws outwardly of said tubular body, and' a finger engaging member carriedk by said rod and extending through a slot disposed longitudinally in the tubular body whereby the rod and aws may be drawn inwardly of the tubular body for proximate movement of the jaws to grip an article.

HARRY L. BERMAN.