US2774135A - Method of making a multiple part anchorage - Google Patents

Description

Dec. 18, 1956 1.. H. MORIN 2,774,135

METHOD OF MAKING A MULTIPLE PART ANCHORAGE Filed Sept. 22, 1952 2 Sheets-Sheet l I I :I 12 I I 15 27 INVEN'TOR. 01146 If. Moran Dec. 18,1956 H. MORIN 3 METHOD OF MAKING A MULTIPLE PART ANCHORAGE Filed Sept. 22, 1952 2 Sheets-Sheet 2 INVENTQR. Zola-s fl/Yamu HTTORNE 2.

United States Patent METHOD OF MAKING A MULTIPLE PART ANCHORAGE Louis H. Morin, Bronx, N. Y. Application September 22, 1952, Serial No. 310,903

2 Claims. (Cl. 29-417) ings on sheet materials of various kinds and classes;

Still more particularly, the invention deals with a method of forming members of the character described, wherein the separate parts of the resulting member are simultaneously formed and united on a wire or strand and then folded thereon to bring the parts into close proximity to each other to form a member of substantially round cross-sectional contour having spaced threaded sections extending longitudinally of at least part of the bore of said member.

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and in which: 7

Fig. 1 is a diagrammatic face view of one part of a die illustrating the formation of the several parts of an expansion shield on a joining strand or wir i Fig. 2 is a section substantially on the line 22 of Fig. l breaking through the uniting wire or strand and omitting parts of the construction and also showi in section, forming tools for shaping the members 'into final assemblage form.

Fig. 3 is a broken 01f side elevation of a shield made according to my invention, looking in the direction of the arrow 3 of Fig. 4.

Fig. 4 is an end view of the structure as shown in Fig. 3, parts of the construction being omitted.

Fig. 5 is an end view of a modified form of product arranged on a coupling strand, the parts assuming a position similar to the shields shown in Fig. 2, but omitting the dies.

Fig. 6 is a side view of the product of Fig. 5.

Fig. 7 is an end view of an anchor member made;55

from the structure shown in Figs.'5 and 6; and

Fig. 8 is a section on the broken line 88 of Fig. 7, omitting the background showing and also indicating in section a mounting in which the member is adapted to be arranged.

In Figs. 1 and 2 of the drawing, I have shown at 10 a die or part of a die having vertically spaced cavities 11, 12 and 13, the cavity 11 being located intermediate the cavities 12 and 13 and these cavities are shaped to form respective parts 14, 15 and 16 of a resulting multiple part anchorage member, such for example, as an expansion shield generally shown in assembled relationship at 17 in Figs. 3 and 4 of the drawing. The separate parts 14, 15 and 16 will be shaped so as to produce, when the parts are assembled, proper alinement of the internal threads 18 in the bore 19 of the shield, as well as proper alinement of the external ribs 20 extending longitudinally of one end portion of the shield. The other end portion 'ice for extending the cast metal or other injected moulded material into the respective cavities 11, 12 and 13 and at 25 I have shown carrying lugs in the form of open ring-like members, which lugs are formed upon 'a carrying pin 26 disposed between the dies, said pin being utilized to support the cast parts 14, 15 and 16when the dies are separated and in moving said parts downwardly into a position beyond the lower surface 27 of the dies, after which, the dies are partially closed and the pin 26 is stripped from the lugs by upward movement.

When the parts are in the lowered position, they may be simply trimmed in conventional manner to remove the gate or sprue 24 and the lugs 25 and the strand 23 sheared at the lower surface 27 of the die. It is preferred, however, that these parts be positioned between two forming tools 28 and 29, the tool 28 being preferably stationary and the tool 29 moved toward and from the tool 28 to fold or form the parts 14, 15 and 16 around a mandrel 30. The mandrel 30- has a large diameter portion 31 which fits in the bore '32 of the cylindrical body 21, whereas the small diameter 33 of the mandrel will fit within the threads 18 of the bore 19, so that, when the forming tools 28 and 29 are separated, the resulting expansion shield can drop freely from or be displaced from the mandrel as a finished trimmed product.

It will be apparent that the tools 28 and 29 will be of a dimension within the overall length of the shield parts 14, 15 and'16 so as to facilitate trimming of the gate 24 and lugs 25. The tool 29 can also include a shearing plate 29' for shearing the strand 23 in the opera-' tion of the tool 29.

It will be apparent that the strand 23 will be of such characteristics as to hold the parts 14, 15 and 16 in the assembled relationship shown in Figs. 3 and 4 with adjacent surfaces of the parts substantially abutting. In this way, the use of the conventional split rings and other fasteners for holding parts of this type and kind together can be dispensed with.

It will appear from a consideration of Figs. 1 and 3 of'the drawing that the bore 19 is tapered, whereas the bore 32 is straight and that the outer surface, on which the ribs 20 are formed, is normally substantially straight so as to provide the usual expansion properties of the shield in the use thereof as with other devices of this type and kind.

In Figs. 5 to 8, inclusive, I have shown a modified adaptation 'of my invention, wherein a series of parts 34, 35 and 36 are formed upon a wire or strand 37 in the same manner of formation of the parts 14, 15 and 16 on the strand 23. However, in the latter figures, an anchorage device 38 is formed in the resulting assemblage of the parts by bringing these parts into abutting engagement with each other and bending the strand 37 in the manner clearly illustrated in Fig. 7 of the drawing. Here again, the parts have internal threads as at 39, which extend the major portion of the length of the resulting bore formed between these parts, one end of the parts having a reduced unthreaded bore 40. The strand or wire 37, in the construction shown, is of round crosssectional form and the outer surface of the respective Patented Dec. 18, 1956 'parts 34, '35 and 36 have threads as at 41 and, in bringing the part-s together in the assemblage orannular rela tionship shown in Fig.7, the threads 39, as Well as the eads, arerb que ti q P QPeLQli EJJ Q I wit a hrher, ti lb n unders qdi thatl t' q min the)? $sq at si th the. an .-m nb i 38.

of the drawing partlro a sheet pppanelQA-Z threaded socket 43 adap d to receive ;the],mem 38,

It s. P eier s dlha pnern the th e d 32-. .be p 5 10 tothat bf the other foreygampleg the thread 32cai1 be' a right hand thread; Whereasfthe thread 41 cari be a tit-h nd threatland; i 11 1 vent, e x. =.asi t- 0f} e socket 43;willfbegcgrtesponding i types d W x z t etqa q fnnli ht re u the of the d isti ct advantages in my improved con;

a s iiby, 2 t st a a l asimpl a r 4 offthe kind under co isi deration.,1

adily ppa nt omt r t .p ms

g the r scribed. V

in tf llyj e ih d, my nv miq awh I ag aim as w k id-fiesi eftq li ei yietters' Pa e 20 pc nt num l J mi. u swe anchor memhersfon a continuous lengtnof l fg in p V ,7 ,.lig,

continuous length, closing the dies angl ea siti ngla 'of threaded parts in spaced side by side relation about said short length of strand by injecting casting material in one injection step to said dies, said short length becoming embedded in said parts, simultaneously forming on each part during said injection a lug portion in engagement with said transfer corg opeping the dies, moving said Pa ts dcmb dded l n thmit f e die y movin said transfercore andiat thefsametime moving a" succeeding short length of strand between the dies, partially closing the diesabqut thejtransfer ooreand stripping e a er. f m d Por on immi ers sltpat severing the embeddedleIigth from saidsucc eeding short length, moving saicl-parts intg-"a circumferential relation 7 with respect to one another by bending the embedded length or portions thereof intermediate said parts, thereby forming an anchor member, and casting'a succeeding plnralityaof.

and durin -ma d;@ m nnga sever ng, d

lfi la art; mhmmembers roniaicentinue sllen H d 49 was II Yi twe aiama ro el a i pt hl fiaas Q dzd s hav n shQrt length of i said strand, "mp ble;;diesi andadjacent d PQab1e tween theadie'sh cavities for forming said parts,-

w l i g,

id 7 .Q s gt 'bin t igh t; nd, ehavingone endi PEEQHXzlOiBQQ: Qai aii-ic nt ngmus leng closingithefi-a dies and castingaplurality of threadedparts in ,spaceda' des de a igmb injgct ng.. cast ng;mater al ln one injection-step Qw'saidja.

out-saidyshort; length of .strandby dies, said short length becoming embedded in.said.parts,.a yltanflquslx QIm B a-QD. achlpartrdur gi saidainificr a uap rt sm Y ngagernenhwith. .said ;tra nsfer 2core,,.

1 2912 5 16 .dicanm in t-s idrari and-embedded length-x .gir id itransferl core and. anthem 7 qcfe edingtshort; length iof'istrandm n the Ipartiallyclosing thegdies about -the..-

at t m sq g ndi ipn ne'fl c at1 Qm po tiqns, trimming said-parts, se\cer g.theembedded. lengthfrom said succeeding shgrtilengthamoving saidpartssjntqt 9 t l t r r nti liir la o 1 byi bending the emheddedllength at PQI'tiOHSQthCIfiOfLilltClTg:

mediate saicgparts thereby. forming; an.- anchor ,membe1"-,. and-casting;slrcceeding plyrality of IhIEIddirP3flS aboutv said succeeding short length-of strand;sduringrsaidatrimau V ne! 1'5PL6lf g and bend a eps. V

' References Cited in the :file ofthis patent ena-34 UNITED STATES PATENTS? Y ,Apr. 15,1 19 1 i Sept; 8,-

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