US 1542213 A
Abstract available in
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Description (OCR text may contain errors)
June 16, 1925.
T. P. BROCKETT JACK Filed 9ct. 14 1924 INVENTOR Zffocke@ ATTORNEYS Patented June 16, 1925.
j UNITED STATES THOMAS PERRY nROoKn'rn OF eOLnsBORO, NORTH CAROLINA.
.Application filed. Uetober 14, 1924. Serial No. 743,606.
To .all fio/2.0111 t may concern.
Be it known that I, THOMAS P. BRooKrrrr, a citizen of the United States, and resident of Goldsboro, in the? county of Wayne and State of NorthCarolina, have invented cer.n tain new` and useful Improvements in Jacks, ofwhich the following is a specification.- i My invention relates'to improvements in jacks and itconsists in the combinations, constructions =and arrangements herein i described and claimed. f t
Anobjectof the invention is toprovide a `jack of simplified construction which will afford facilities for making use of a rela tively small forceifor causing relative move- `ment of two separatermovable.members in a straight line` against' a vrelatively `greatI resistance, if required, and for holding such members `against accidental movement from adjusted positions either toward Veach other or away fromeach other as desired and as determined ,by the position ofthe jackin respect to said members.
Other objects and advantages of the invention will be apparent from the following description, considered in conjunction with the accompanying drawings, in which- Figure 1 is a side elevation of the inrproved jack in applied position with respcct` to two movable members on oppositely extending supports from a water meter, the latterbeing shown diagrammatically, and
Figure 2 is a section substantially along the line 2f-2 of Figure 1, the water meter exhibited in Figure 1 being omitted.
A jack embodying the invention com-- prises a pair of substantially L-shaped or right angular spacing or pressure exerting members, each of which comprises a straight attaching end portion 1, a straight contact. end portion 2 and an intermediate bend portion 3 by means of which the attaching poi'- tion 1 and the contact portion 2- are merged `one into the other. The attaching end portion 1 is circular in cross sectional contour and is ,provided with external screw threads' as indicated at 1. A coupling or sleeve nut 5 has right and left hand internal screw threads extending along the bore thereof from its opposite'ends toward the transverse median line ofthe coupling nut for engaging with the threaded end portions 4 of the respective pressure exerting members when said members are arranged with the end portions 4 thereof extending toward each other in a straight line as clearly shown in Figure 1.
The contact portions 2 therefore will be held in parallel relation' to each other and the distance between such contact portions can bevaried at will within a considerable rangeby turning the coupling nut 5 on the threaded end portions 1 sothat such thread.- ed end portions will be moved axially toward or away from cach other, as desired.
Each of the .contact portions 2 is provided with a pair of forks 6 at its extremity,
the respect-ive forks being offset laterally from opposite sides of the main portion of the Contact member 2 and being adapted to straddle and have sliding movement along a supporting member which vis disposed parallel to the coupling nut 5 when the latter has been manipulatedin the manner described. l
A. set screw 7 is in threaded engagementI `with a` transverse opening 8 in one of the branches G of each ofthe lcontact portions 2 and may be Atightened against the member which is straddled by the branch 6 to releasably hold the contact portion 2 against movement from adjusted position along the supporting member.
From the foregoing description of the various parts of the device, the operation thereof maybe readily understood. The device is shown in Figure 1 inV position to hold two members 9 and 10 which are slidable on alined tubular members 11 and 12 respectively extending from `opposite sides of the base portion of a water meter against moving from the full line positions along the supporting members 11 and 12 toward each other. It will be understood that the members 9 andl() may havebeen moved from the dotted line positions of Figure 1 to the full line positions on the supporting members 11 and 12 against a relatively great resistance, if required, as a result of manipulation of the coupling nut 5 to cause axial movement of the attaching portions d away from each other, the contact portions 2 of the pressure exerting members thus 'being moved from the dotted line positions to the full line positions of Figure 1 and shoving the members 9 and 1 0 before them along the supporting members 10 and 12V from the dotted line to the full line positions. The set screws 7 then may be tightened to hold the members 9 and 10 against accidental relative movement on the supporting members ll and 12 and toward each other. It will be manifest that sliding movement of the members 9 and 10 toward each other on the supporting members ll and 12 may be effected by placing the forks of the contact members 2 in engagement with the remote Walls of the members 9 and 10 and then manipulating the coupling nut 5 to draw the attaching ends 4 axially toward each other.
Obviously, my invention is susceptible of embodiment in forms other than that illustrated in the accompanying drawings and I ytherefore consider as my own all such modi- Ifications and adaptations of the form of the device herein described as fairly fall Within the yscope of the appended claims.
I claim l. A device of the character described comprising a pair of pressure exerting members, each being substantially L-shaped and consisting of a straight threaded attaching end portion, a straight contact end portion and a curved intermediate portion merging the straight attaching end portion and the contact end portion one into the other, a coupling nut connecting the attaching end portions of said members, whereby the contact end portions of the members Will be held substantially parallel with each other, each o'f said contact end portions being formed With a pair of forks at its eX- tremity, said forks being offset laterally of opposite sides of the body of the contact end portion and lthe Ainner -wall of each contact end :portion being concavely curved at the junction of the forks of said contact end portion to closely .fit over a .pipe or like circular member which is straddled by the forks.
2. A device of the character described comprising a -pariof pressure exerting members, each being substantially L-shaped and consisting of a straight threaded attaching end portion, a straight contact end portion and a curved intermediate portion merging the straight attaching end portion and the contact end portion one into the other, a coupling vnut connecting the attaching end portions of said members, whereby the contact end portions of the members Will be held substantially parallel with each other, each of said contact end portions being formed With a pair of forks at its extremity, said forks being offset laterally of opposite sides of the body of the contact end portion and the inner Wall o-f each contact end portion vbeing concavely curved at the junction ofthe forks of said contact end portion to closely fit over a pipe or like circular member which is straddled vby the forks, and a set screw threaded Athrough a transverse opening in one'of the forks of each contact end portion for securing said contact end portion to the member which is straddled by said forks.
THOMAS PERRY BROCKETT.