US 892333 A
Description (OCR text may contain errors)
PATBNTED JUNE 30, 1908.
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[NI ENTOR 0.3. TRAUB. JOINT FASTBNBR. APPLIOATION FILED JUNE 8. 1907.
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WITNESSES No. 892,338. PATENTED JUNE 30, 1903.
APPLICATION FILED JUNE 8. 1907.
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% I 1 I I 22 i 23 I/VITNESSES; [/VVIZ/VTO/G W CbarZeJ'J I 2 0203 reference indicate I cut CHARLES J. TRAUB,OF CINCINNATI, OHIO.
b ecltication or Letters Patent.
atented June 30, 1908.
Application filed June 8, 190'2". Serial No. 377,991.
and useful improvement in Joint-Fasteners,"
of which the following is a specification.
' This invention relates to fasteners, and more particularly to fasteners for the joints of furniture etc., in which it is desiredthat the fastcnings be invisible, and has for its object to provide a fastener of this kind which will be simple and cheap, which may be easily placed in position, and which, when so placed, will be entirely invisible.
Other objects and advantages will be apparent from the following description and it Wlll be understood that changes in the specific structure shown and described may be made within the scope. of the claims without (10 )arting from the spirit of the invention. 4
n the drawings forming a portion of this specification, and in which like numerals of similar parts in the sev eral views, Figure 1 1s a sectional view fasten two pieces of wood together; Fig. 2 is an elevational view of the fastener, showing the correlatimi of the two men'ibers; Fig. 3 is an elevational view showing the inserting member and key in use in connection with one of the threaded members'yFig, 4 is a perspective view of the inserting member; ig. 5 is an elevational view of the threaded member which carries the locking jaws.
Referring now to the drawings, the pres invention comprises two exteriorly threaded cylindrical members 5 and (i, the member (5 having a longitudinal passage 7 formed thcrethrough, as shown. The two members are gradually reduced at their outer end portions, as shown at 5 and 6 respectively, and at its inner end, the member 5 carries a cylindrical stem 8, which projects therefrom and which is bifurcated as shown at 8.
A pair of jaw members 9 are provided, each consisting of an outer flat portion 9 and an inner flat portion 9, the portions of each jaw member extending at right angles to each other. The two jaw members are disposed with their outer portions 5) in approximately parallel relation, and with their inner portions 9 overlapped and engaged in the bifurcation S o the stem 8.
The bifurcation of this stem results in spaced 'which open through the fingers S, as shown, between whicl'i the portions 9 of the aw members he, and a pivot pin 10 is engaged transversely through these fingers and the portions 9 of the jaw members, adjacent to the inner ends thereof. A transverse pin 1] is engaged in thefingers 8 adjacent to their outer ends and is. re ceived in registering openings 12 formed in the nations 9 of the jaw members adjacent to the. outer .cnds tl'iereof. The openings 12 are slightly elongated transversely of the portions 9 so that the jaw members have slightpivotal movement. towardand away from each other upon the pin 10.
Sockets 13 are formed in the inner faces of the. jaw members adjacent'to their free extremities, and receive a helical spring 14, which thus holds the jaw members with their outer ends yieldably in spaced relation. Jaws 15 are carried by the outer end portions of the jaw members, and extend outwardly in opposite directions. These. jaws have straight faces 16 at their inner ends and forwardly convergent faces 17, as shown.
Formed in the surface of the member 5 at diametrically opposite points, there are a pair of longitudinally innen end of the member. These recesses have oppositely.
extending lateral extensions 18 at their distal ends from the inner end of the membenas shown. These recesses with their extensions, are designed. to receive correspondingly formed fingers 19 carried by what may be termed an inserting member 20, these fingers being located at one end of the inserting member and projecting longitudinally therefrom at opposite sides of a central longitudinally extending recess 21 arranged to receive the jaw members i) and the stem 8, in order that the fingers 1.) may be engaged in the recesses 16.
,The inserting member 20 is cylindrical in form, and has lateral projections 22 at opposite points between its ends, for engagement in notches 23 formed in a key 24. This key consists of a hollow cylindrical member open at one end as shown at 25, and it is at this open end that the notches 23 are formed. Adjacent to the opposite end of the member, a transverse rod 26 is enga ed therethrough, by which the key may be turned. As will be understood, the cylindrical member is arranged to receive theportion of the inserting member 20 at either sideof the projections 22, thcrewithin.
extending recesses 16 1 ihmember 6 a longitudinal passage rried therethrough, as previously stated, d inner this member 6 is bifurspaced portions 27, each of evined with a lateral projection 'nd. These projections 27" at opposite sides of the portions s aces are formed which are in The inerting member carries a cony located outwardly projecting stem 29 at its opposite eno from the fingers 19, and at the base of this stem 29, there are formed laterally projecting angular enlargements 36 of a and form to engage in the spaces 28. The arrangement is such ll at the stem 29 may be engaged in the passage 7 with the enlargements between the edges of the portions 27, when rotation of the inserting member carry the member 6 therewith,
will be readily understood. The inserting member 20 is of somewhat greater diameter than the members 5 and 6, for a purpose which. will be later described.
As will be seen from the drawings, the passage 7 is primarily designed to receive thej aw members 9 and the stem 8 therewithin, and the arrangement is such that when the two members 5 and 6 are in mutual engagement at their inner ends, the jaws 15 lie outwardly of the member 6 and with their faces 16 against the outer ends of this member, to hold the two members against separation;
in use, when it is desired to join two-pieces of wood, the surfaces to be fastened together, bored into to form recesses disposed to be brought into registration. The inserting member is then engaged with the member 5 and the latter is screwed into one ofthe recesses until the end of the inserting member engages the surface of the wood surrounding wi ll assess the recess. The inserting member is then disengaged from the member 5 and engaged with. the member 6, the latter being screwed into the other recess} The jaw members are then inserted in the passage 7 of the member 6 andthe two pieces of wood brought together, when the jaws 15 will lock the members 5 and 6 against separation, as described above. I
riorly threaded members, a stem carried by one of said members and bifurcated to form spaced fingers, a pair of jaw members pivoted between the fingers, means for limiting the outward movement of the jaw members, a sprin' arranged to hold the jaw members yieldab y againstinward movement, and jaws carried by the outer ends of said jaw members, the other of said threaded members being hollow for the reception of the j aw members and the bifurcated stem, said jaw members being arranged to lie with their jaws against the outer end of the hollow iember when the inner ends of the two first named members are in mutual engagement. In testimony whereof I aflix my signature, in presence of two witnesses.
CHARLES J. TRAUB.
EDWARD TRAUB, JOHN TRAUB, Sen.