US660364A - Pulley-block. - Google Patents

Description

my 560,364. f Patented im. 23-s9oo- YE. y.lT snowman'.

PuLLsy sLox. 'j

(Appz'mmn sled mi. was.

fics/l.

y' v I l I n m I fvmna J. E COLEMAN.

UNULED STATES EDWARD .L COLEMAN, oF BARRINGToN, RHODE IsLAND.

T all wtom it may concern.:

Be it known that I, EDWARD J. F. CoLF- MAN, a citizen of the United States of America.,

. and a residentl of Barrington, in the county in Pulley-Blocks,

' mounted on said tie.

space between the rope,

. In view of Bristol and State of Rhode Island, have invented certain new and useful Improvements of'which the following is a specification.

My invention relates to improvements in pnlleyblocks; and it consists .of an independent link-becket member of peculiar construction adapted to bebent around the lower teor stud of the block-shello'rframe, whereby a plain or common type ol' block may be readily conve`rted into a becket-blocl,'all as hereinafter set forth and claimed.

' Becket-blochs as usually constructed have' the shell por! ion som ewhnt elongatcdbetween the sheavo and the bottom stud or tie which unites the two sides of the shell together, o.'

metal thimble or grooved fegrule being,- loosely The object of s-ncli is to provide ample served around the thimble, and the sheav'e member, so that the latter may'turn freely. It, is obvious that such former becket-blocks are somewhat heavier, larger, and more expensive than plain blocks, assuming, of course, that the sheaves arel of the same size in both cases.

of this fnct itis usual for the blockmnnufaoturer to employ for the becket-block adirerent and heavier shell than the one used for a plain block.

By Ineens of my improvement a plain block elongation of the shell may be"readil v converted inten. becketblock without additionnl cost or practically without increasing the cost, the becket meinber itself being conipnratively,inexpensive. 'lhe becket may be attached to the shell' by the manufacturer of the block, or it may be d one by the purchaser, since the labor in volvcd is simply. to vplace the member inl p'osition around thel lower tio or stud of the shell and bend its two end portions together, thus at the same time completing the link and forming the becket-eye to receive the rope.

In the accompanying drawings, Figure 1 is a frontside Aelevation of a plain pulleyblock provided with my improvodlink becket.

Fig. 2 is n corresponding edge vi'ew ofthe V same, the becketmember in both views being'represented sectiounlly. Fig. 3 is 'a' side view, in partialsection, of the becket niember or casting before 'being attached to the block; and Fig. 4 is a Vplan view of the Same'.

In thedrnwings, A indicates a pnlley-block providedwith'my `improved link becket B.

The shell or freine a. of the block is or maybe made substantiallyas common and provided cast metal andv consists of two parte united at top and. bottonib v inwardlyffacing-ties a' a?, respectively, rivets r, therethrpngh, servingto rigidly secure the shell together. The becket member B may be made of enst metal-as, plier-bronze, scr-or struck up froinsteel and then galvanized; Iprel'er the former, however. In such ense `the normal shape of the casting is substantially as represented in Fig. 3, wherein 4the end portions b are provided with elongated holes er oyes e, the sides passing centrally' for example, phoswith the freely-turning grooved sbeave or pulley d. As drawn, the shell is made of thereof being,r beveled and woll ron-nded,tliere v by not only adapting the pattern to be more readily drawn from the mold, but also forlning when properly bent e. smooth nonnn`gu in r surface fol-the rope to pass through. The dotted lines in said Fig. 3 show the relation of the end porti-ons when completely bentand shaped. 'lhe width of the becket at the center portion b' may be increased, the thickness being proportionately decreased, thereby ndnpting the castle to be more readily bent around the post. ,'l he thickness of the ond portions b of thebeclcet considerably exceeds l thnt of the center. This is done to increase the distance through the eye, so es to forma. more serviceable sont forl the rope when secured therein.

In attaching the becket the .casting is Afirst placed in position, sny, as show-n by dotted lines in Fig. i, followed b'y'bending the two end portions b downwardly until they are brought into close engagement with each other, nt the same time portion b' Inround the tie or post a, the becket when thus mounted in place being supported by and adapted to swing freely on the said tie. Obviously the becket may be rcadilyde tnched from the block-shell, if desired.

pressing the center n win be einen that nl@ axis tf the noieV Vzo E' l Y 860m or eye e is ut right angles to that of the snpporting-tie a, the becketfbl'ock thereby haw ing the" pulley-rope a'nd the bekellrope in a. plane common to both. 5 I would add that after the casting hasheen inserted and bent to form the becket the ends b thereof may be expanded; if deeiredghy means of a suitable mandrel forced into the opening e, thereby enlarging the eye and in- Ivclaim as my invention- In a pulley-block, the combination of the two-perl; frame a, provdedat che'bottoi wth a connecting transverse tie or stmd'a, Mivet I 'r passing through said tie and securing the frame together, and the link becket B bent creasing the width of Lheends., (Se'Fig'. 21)' looeelygaronnd the tie, the two end portion of Le becket, which are eousderbly thicker .than ehe center portion, being pressed su ugly together below the tie and provided'ivth' a tfesveisely-armnged eye e to receive a rope,

the axis of the said eye being at right. angles i te' that' of the-tie a'-', whereby the rope, becket and pulley are adapted to move in a common plane, snhetan Lially as described.

Signed by me at Providence, Rhode Island,

this 27th day of November, A. D. 1899.

Enwmw J. F. COLEMAN.

GEO. H'.' REmGnoN,

Cenis. C. Remmen.

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