US967203A

US967203A - Derrick pivot connection.

Info

Publication number: US967203A
Application number: US52761209A
Authority: US
Inventors: Asher Lambert
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-11-12
Filing date: 1909-11-12
Publication date: 1910-08-16
Anticipated expiration: 1927-08-16

Description

A. LAMBERT. DERRICK PIVOT CONNECTION.

APPLICATION FILED NOV. 12, 1909.

Patented Aug. 16,1910.

3 SHEETS-SHEET 1.

A. LAMBERT.

v DERRICK PIVOT CONNECTION. APPLIOATION FILED NOV. 12, 1909.

Patented Aug. 16, 1910.

a SHEETS-SHEET 2.

E-IE:

A. LAMBERT. DERRICK PIVOT CONNECTION.

APPLICATION FILED NOV. 12, 1909.

Patented Aug. 16, 1910.

3 SHEETS-SHEET 3.

asnnn LAMBERT, or NEWARK, NEW JERSEY.

Dannie]: rrvo'r connnorron'.

Specification of Letters Patent.

Patented Aug. 16, 1910.

Appllctitidi men November 1%, 1909-. Serial No. 527,612.

To all whom it may concern:

Be it known that T, ASHER LAMBERT, a citizen of the United States, residin at 1 Johnson avenue, Newark, county of ssex, and State of New Jersey, have invented certain new and useful Improvements inDerrick Pivot Connections, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to that class of derrick in which a post is supported at the top by guys or braces and has a jib jointed thereto to be raised and lowered by suitable hoisting apparatus the jib also su porting the hoisting-pulley, and the ropes f dr operating the jib and the hoisting-pulley being carried through the lower pivot of the post and thence horizontally over a sheaveulley so as to operate freely when the 0st 15 turned in various directions by its bul -wheel. The post in the present invention may be made of solid wood as the pivots are at one side of the post so that theihoisting-ropes are not required to pass through the post at any point. 1

The invention furnishes an improved construction for the pivot-pin at the top of the post which makes the pin readily renewable and provides it with a wearing sleeve where the eyes of the braces fit upon it. The sleeve is preferably made long enough to receive the eyes of three braces and has a reversible collar upon the top adapted to cover the upper third of the sleeve when only two braces are applied thereto.

The invention also provides an improved metal base to en port the post which renders the bottom s cave-pulley more accessible by placing it above the sills instead of between them, as is common; and such base is rovided with a stepwhich is removable and renewable when worn or cracked.

The invention will be understood by reference to the annexed drawing, in which- Fi re 1 is an elevation of a derrick provide with the improvement; vFig. 2 1s a planet the upper pivot-attachments; Fig. 3 1s a side View of the'same parts with the sleeve, the eyes and collar upon the pivotpin in section at the center line where hatched, Fig. 4. is a front view of the pivotattachments with the collar upon the pivotpin adjusted to receive two eyes; and Fig. 5 shows the upper end of the pivot-casting and through the plate It and the the, pivot-casting securely t ereto. The

pivot-pin with the collar reversed to receive three eyes. Fig. 6 is a front view of the pivot-casting and the pin laid therein. Fig. 7 is a plan, and Fig. 8 a sectional elevation of the base and step for the derrick. In Fig. l, a designates the post, b the Cjib pivoted to the bottom of the same, an 0 one of the braces having an .eye 03 fitted to the. pivot-pin e on top of the post. The hoisting-sheave f is shown operated by a hoisting-rope f and the jib is raised and lowered by a rope g. The fixtures for the ivot-pin e consist of a pivot-casting having a plate 7t fitted to one side of the post a, and an extension 2' of such late resting upon the top of the post. T e plate also has flanges l2. embracing opposite corners of the post. A grooved seat is formed upon the face of the plate 71. to receive one side/of the pin 6, and a grooved cap is fitted to the outer side of the in andprovided at its upper end with ho ting lugs 1 having bolts m extended'through the same into. the plate It. The heads of these bolts are sunk in recesses m upon the inner side of the said plate. The lower part of the cap is unprovided with bolting-lugs but is provided vwith a projectinglug 11. having flat sides to receive two frame-bars n which carry the sheave 0' for the jib hoisting-rope g A bolt p is inserted through the frame-bars 'n and the lug n, and secured by linch-pins p or other suitable means. A staple-bolt bent into Ushape with a loop 9 at one end, and two legs 9 is fitted throu h holes extended transversely through the ug 12. above and below the bolt p, and through-holes e in a pivot-pin e, holes 9 in the plate it and oles a in the post, the legs 9' of this staple-bolt projecting suificiently from the post for the ap licatlon of a washer-plate r and nuts 8. olts t are also inserted osts to lock loop of the staple-bolt surrounds the metal through which the sheave-bolt p is extended and thus strongly supports such bolt, while it also secures the pivot-pin in place, by clamping the cap firm y to the post and by its penetration through the pivot-pin. This connection of the pivot-pin to the pivot-castin permits the pin to be firmly secured wit out boring any socket in the casting or turning the pin to fit therein, and

thus permits the pin to be made and fitted sage of the ropes.

to the casting very cheaply. To prevent wear of the pin and thus avoid its renewal, it is provided above the top of the pivotcasting with a bushin u which is prefer.- ably made of steel-tub1ng slipped over the pin, and of'suflicient height to receive more than two of the eyes d, d, in case three braces are desired. The sectional view in Fig, 3 clearly shows this construction, with a collar '0 fitted removably to the top of the pin and heldin place by a through-bolt 'v. The collar is formed upon one end with an annular socket or recess w adapted to cover one-third of the sleeve u. When the recessed end of the collar is fitted over the sleeve as shown in Figs. 3 and 4, the sleeve is exposed sufliciently to receive two of the brace-eyes d, d, but the collar may be reversed as, shown in Fig. 5, thus throwing the socket upward and exposing all of the sleeve so as to receive three braces, as shown in that figure.

The base for the bottom of the osts consists of a ribbed box casting aving a foot B fitted to the tops of two angularly arranged sills 'A, A, shown in Figs. 1 and 7, which sills are united-at a right angle below'the post and extended backwardly to receive the feet of the braces c. The base has the two sides C of the box extended upwardly from the foot to carry, the horizontal pivot D of the sheave-pulleys E which guide the derrick-ropes. The sides lie close to the sheaves so as to stiflly support their pivot D. A seat F is cast on top ofthe side-plates C and is formed with acentral rope-aperture G. The inner edges of the sheaves lie beneath such aperture as shown in Fig. 7. A step H is fitted to the seat and has a boss H- to center it in the a erture Gr,- and the socket H to receive the ower pivot of the post. The step has a center opening I for the pas- The bolts J secure the ste detachably upon the top of the base, which permits the removal and renewal of the step when re uired. The base has u right stiffening ribs C at the sides of t e plates C, and its foot B has flanges B fitted to the outeredges of thesills A, A, to resist the side thrust of the 0st, and the foot is also secured to the sills. y bolts B It has been common to support the step upon two adjacent beams resting upon the sills, with side-plates extending downward from the ste to carry the pivot of the sheaves; but in such .case the contiguity ofthe two beams to the side-plates. revents access to the pivot of the sheave-pu eye, and thus rendersit impossible to remove or renew themwithout taking down the derrick. With the improved base shown in Figs. 7 and 8, the wet of the sheaves is located abovethe si ls and can be readily removed so as to renew the sheaves when required, to

lubricate the same, or torenew them when which is liable to rapid wear, to be renewed without renewing the side-plates or any other parts of the base. It also preserves the ad uStment of the base and sheave-pulleys u on the sills, as neither requires to be distur ed or detached when renewing the step.

Having thus set forth the nature of the invention what is claimed herein is:

1. The combination, with a central derrick-post, of a pivot-casting secured upon one side of the same at the top and having a vertical groove, a pivot-pin fitted to such groove, and a cap secured u on the pivotcasting to hold, such pin detac ably in place.

2. The combination, with a derrick-post, of a pivot-casting secured upon one side of the same at the top and having a vertical groove, a pivot-pin fitted to such groove, a grooved cap secured to the pivot-casting over the pin and provided with a sheaveframe bolt for the attachment of a sheaveframe, and a staple-bolt having its legs extended through the cap, the pivot-pin, the pivot-casting and the post, and its loop embracing the sheave-pin lug.

3. The combination, with a derrick-post, of a pivot-casting secured upon one side of the same at the top and having a vertical groove therein, a pivot-pin e fitted to such groove, a grooved ca fitted over the pin and having bolt-lugs upon its upper part and flattenedupon its lower art to form a lug n for a transverse sheaveame bolt, the bolt 2 inserted through such lug, with the sheave-frame n jointed thereon, and the staple-bolt having its legs 9 extended through the lug, the pivot-pin, the pivotcasting and the post, with washer and nuts upon' their ends, the loop of the staple-bolt embracing and strengthening the lug where the transverse sheave-frame bolt is inserted.

4. The combination, with a derrick- 0st,

of apivot-casting secured upon one si e of the same at the top, a pivot-pin secured detach-ably upon the outer side of such casting, and a wearing sleeve fitted to such pivot-pin abovethe top ofthe castin 5. The combination, with a derric 0st of a pivot-casting secured upon one si e oi the same at the top, a pivot-pin secured deof a step, and a metallic base separate from the step and adapted to support the step above the sills and having a pivot above the sills for the pulley-sheaves.

7. The combination, with a derrick- 0st and sills jointed beneath the bottom 0 the 10 pulley-sheaves journalecl upon the same be-" tween the side-plates, and the seat F upon the side-plates with the ste H secured detachably thereon by bolts In testimony whereof I have hereunto set my hand in the presence of two subscribing 15 Witnesses.

ASHER LAMBERT. Witnesses THOMAS S. CRANE, Rom. L. HATFIELD.