USRE13496E - Assig - Google Patents

Description

G; E. ROHMER. LEAD PACKED ANCHOR BOLT. APPLIOATION ILQBD MAR.13,1911.

Reissued Dec. 10, 1912.

/ WZ% M UNITED STATES PATENT OFFICE.

GABRIEL E. BOHMER, OF VTOODSIDE. NEW. YORK. ASSIGN'OR OF THREEFOURTHS T 3'. FRANCIS BOORAEM. 01? NE! YORK, N. Y.

LEAD-FAGKED ANCHOR-BOLT.

13,496 Specification of Reissued Let-tars IPatent. lhgissuefl Dec, 10,1912.

Original No. 977,402, dated November '29, 1910, Serial No. 557,725. Application for reissue filed March 13, 1911. Serial No. 614,273. To all whom-Honey concern: l The anchor washer C (Figs. and 3l is Be it known that I. GABRIEL E. Hoffman, a the most important part of this deviceand is citizen of the United States residing atulso made of lead. Its shape being that. of Woodside, in the county of Queens and two truncated cones whose bases would be State of New York, have invented a. new coincident on line i j (sc 2}. The di- 56 and useful LeadPac-kcd. Anchordlolt, of ameter of the-hole in this anchor washer G, which the following is a. specification. Fig. 2, is of a few thousandths of an inch My invention relates to nuprovements in larger than the diameter of the bolt A; the lead packed anchor bolts, which the bolt. bolt. fitting therein by a push fit. As illus is anchored into a foundation or stone hole tmted by letter in, Fig. the anchor washer 60 in a more rational and theoretical way than hole runs straight, a short. distanceand corit. lo 110W thu5 aging away with the old l responds to the size of the bolt A. Then it style bolt lead pacl'cing, which consists in Spreads open to be a counter-sunk hole I,

filling up and. packing with sheet lead. the of an outside diameter an, equal toihe outopen pace, left. all aroi nd a. bolt placed in a. E 51119. diameter ()l" the collar B (Fig. The 4 hole into which it has to be anchored. 1 periphery p of the countersunk hole Z makes- I attain this object by the device. illus with the center-'0, f of the anchor washer an trated in the accompanying drawings in angle 0,21. 6, equal to 30 (Fig. ll, .The outwhichside diameter of the anchor washer C (Fig.

Figure 1, is an illustration showing how l 2.) taken at line 72 j is larger than thedia bolt. is anchored in a hole by the use of the i alnetcr of the hole into. wluch the. anchor present invention, Fig. 2, is a longitudinal holthas to be set. The conditions goyeirnsection of the bolt and anchor device, and log the $1222 of that outside diameter Wlll be Fig. 3, an end elevation, Fig. 4, illustrates set forth hereafter.

a tool used for packin I purposes. 3 As illustrated in Figs. 1 and 2, it will be 75 .Similar letters reer to similar parts i seen that the truncated cone edge '12., of the throughout the several views. l anchor washer C, Fig. 2, makes with the The anchor boltdevice of the present inbevel hole Z. peripherical side 1), an angle vention is composed of three partsas illus- Q, r, u slightly less than 90; the angle 8, r, trated in Fig. 2--the bolt itself A, the collar 11 being a right angle. It will also be no- B and the anchor washer C. The bolt. A, ticed that the other side. of this anchor (Figs. 1, 2 and 3) is an ordinary bolt of any Washer C, Fig. 2, is cast. with a ridge t. size as commonly supplied by the trade, but The object and use of the di'lferent angles generally with a square head as bolts with q, 'r, u and s, '1', u, as well as of the circumsuch heads are almost exclusively used in l ferential ridge :5. Fig. 2., will be set forth this anchor bolt. into a foundation hole and 7 why it. holds on.

To anchor a bolt of this system into a concrete hole G- (for instance) it is firstneoessary to have an iron bar of a s uare or round section, small enough to wor freely between the bolt A (Fig. 1) and the inside. periphery of the hole. But a tool D, with a-concave blade E. as'illustrated in Fig. l,

made of lead or any other soft meta of an appropriate thickness and with the inside hole of a diameter slightly larger than the diameter of the bolt- A. An end of this collar is beveled as shown by letter (Z. Figs. 1 and 2, this bevel making with the center of hole a f, Fig. 2., (this center being also the center of the bolt A) an angle a, g, 71., about 30, (same figure). The other end of the collar is plain like a. bushing and its length and having a handle F (same figure) of a is about equal to the diameter of the bolt length to suit the depth of the concrete hole used. But this lengthcan be changed 210- would certainly give the best'results.

' cording to the depth of the hole into which The bolt A, Fig. 1-,"onto which the collar the bolt has to be anchored. B has been slipped is dropped into the foundation work. The collar B (Fiig. 2) is pin the following explanation of how to'setconcrete hole G, the head resting upon the bottom of the hole. The plain end' of the collar B, (Fig. 1) rests on the bolt head while its beveled end all stands ready to receive the anchor washer C (Figs. 1 and 2.) The anchor washer has an outside diameter larger than the diameter of the concrete hole G, Fig. 1. The size of this diameter will be determined by experiments, but must be such as to necessitate the use of a hammer 1 and of the tool D, to drive the anchor washer C into the hole G, (Fig. 1).

Preparatory 7 to driving the anchor washer into the hole,

it must be placed in such a way as to have its countersunk hole Z, (Fig. 2') when driven down the concrete hole tofit exactly over the beveled end al of the collarB (Fig. 1).

As mentioned before, the bevel edge of collar B, akes with the center of the bolt an angles, g, it about equal to the 30 angle '0, u, c, of the anchor washer C, (see Fig.

2.) This angle causes the beveled edge d, of collar B to act as a wedge, collapse (on account of the softness of the metal of which it is made) and draw tightly all around the bolt A, (see c, Fig. 1.) A perfect seat for the anchor Washer C is thus obtained, that seat making an angle of 30 with the center of the bolt A, see Fig. 1. By driving t-he anchor washer G into the concrete hole G,

(Fig. 1) the opening of'the angle 9, r, u, Fig. 2, is a good deal lessened owing to the malleability of the lead; which causes the anchor washer G to draw closer to the center of the bolt A, (Fig. 1). Now, if,

with the tool D, Fig. 4, the circumferen--v tial ridge t, Fig. 2, is hammered down against the periphery of hole G, Fig. 1, the angle q, 1, a, (Fig. 2) is increased again close to 90. It will be readily understood that by a careful hammering of the ridge 2?, Fig. 2, a perfect packing of the anchor washer C, Fig. 1, will be obtained as the metal will draw back all around the bolt on the bevel seat made by the collar B. As that collar bevel seat makes, with the center of the bolt, an angle of 30 and as the anchor washer in drawing back makes with the-collar bevel seat an angle close to 90 all around the bolt, this device oifers a perfect and theoretical truss line to resist any force exerted on the bolt to pull it 'out of the hole.

The collar B and anchor washer C being an anchorage unit it is possible to multiply those units aswas done in Fig. .1, by

I successively packing collar B on top of anchorage washer C and so on. The anchor bolt illustrated in Fig. 1, being anchored by 4 units B and C being the first, B and C the second, B and C the third and B and 6* the fourth unit (see Fig. 1.)

The application of this mode of anchoring bolts into foundations hasa wide scope and will be readily employed where expansion bolts and the old style lead packing were used before. I also do not limit myself to the kind of metal of which the collar and anchorwasher can be made, but it appears to me that a soft metal should give the best results.

' The above description and drawing shows one embodiment of my invention, but within the scope of the appended claims other embodiments may be made without departing from the spirit and underlying principles of my invention.

I claim:

1. The combination of a collar and a washer, the latter having its outer partcapable of movement in either direction, said washer when moved forming a truss with the collar, said'truss being composed of one truss line substantially 30 to the axes of the collar and washer, and of another truss line at substantially to the first.

2. The combination of a collar and a washer having a hole, the sides of which hole form an angle of substantially 30 with the axis of the washer, said collar and washer when cooperating forming a truss composed of a truss-line formed by the hole side of the washer, and of another truss line substantially 90 to that line.

3. The combination of a collar and washer, said washer being'of larger diameter than the collar, and having part of its extended surface capable of movement in either direction parallel with the axes of.the

collar and washer, pivotally in respect to a and having a peripherical side forming with the seat an angle of substantially 90.

5. The combination of a collar and a washer, the washer having surfaces, one of which meets the collar and the other of which makes withthe meeting surface an angle of 90.

6. The combination of a collar having a beveled end of 30 and a washer havin a beveled interior hole of 30, said was er,

being of larger diameter than the collar and having part of its outer surface capable of movement in either direction, and also having part at right angles to the beveled end truncated cones placed base to base contacting with the aforesaid collar, thereby constituting an anchorage unit substantially as described. i

8. In combination, .a bolt, a collar sur rounding said bolt having one end plane and 1 the other end beveled, a Washer in the form 1 of truncated cones secured at their bases name to this specification in the presenee of contactin with said collar, said bolt by' two subscribing witnesses. I

means of its head forminfi a stop for the col- GABRIEL ROHMER y la:- the other end of the on bemg threaded I 5 and rovided with an adjusting nut, sub-' Witnesses:

stantmlly as described. H; GonrEL, r-

In testimony whereoffl have signed my FRANCIS Boomn.

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