US2513403A

US2513403A - Hoist

Info

Publication number: US2513403A
Application number: US11490A
Authority: US
Inventors: Leonard F Dakin
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-02-27
Filing date: 1948-02-27
Publication date: 1950-07-04
Anticipated expiration: 1967-07-04

Description

July 4, 1950 L. F. DAKIN 2,513,403

' uoxs'r Filed Feb. 27, 1948 2 Sheets-Sheet 1 3nventor A o/v/nep F K/N (Ittoimeg L. F. DAKIN July 4, 1950 HOIST 2 Sheets-Sheet 2 Filed Feb. 27, 1948 Zinnientor ZfOZ/QZi/f/M attorney Patented July 4, 1950 UNITED STATES PATENT 0F F 1 CE I H'OIST Leonard F. Dakin, Pleasantville, N. Y.

Application February 27, 1948, Serial No. 11,490

3-. Claims.

This invention relates to elevating devices and more particularly pertains to hoists for raising and lowering materials for buildings and the like.

The invention provides a novel swinging hoist arranged for operation by one man, and which. is capable of being suspended from a wallet a building regardless of any projecting cornice or parapet so, as to leave the roof or door with which it is operating unimpeded for working conditions.

' The invention will be understoodfrom the fol lowing description when considered inconnection with the accompanying drawings forming a part thereof, and in which:

. Fig. l is aperspective view of a hoist embodying the invention;

Fig. 2 is an elevation of the hoist applied toa building wall;

Fig- 3 is a section of the hoist taken on line .;--3 of Fig. 1; v

Fig. 4 is a sectional view on an enlargedscale on line t-A' of Fig. 3;

Fig. 5 is a. sectional view on an enlarged scale on line 55 of Fig. 3';

Fig. 6'. is a perspective view of an oilset adapter for the hoist, and

Fig, 7. is a perspective View of a bracket hook for the hoist.

Like characters of reference designate the same. partsv throughout the several views.

Referring to. the drawings. the hoist. com prises. in general a hoist. bracket A, which is arranged, to. be secured to a wall of a building. and. a hoist B which is; supported in the. bracket A for swinging movement with respect thereto.

The bracket A has an upper triangle. made up of the members: I'll. tlmand l2, and a lower triangle of the same size formed by members l3, l4 and i5. These two triangles, are disposed in horizontal planes and. are spaced apart by up rights l6, l1 and I8 at the apices. of the tri angles. Diagonal braces l9 and 26! extend from. the two rear apices of the lower triangle to the forward apex of the upper triangle. The bracket is attached to a wall of a.v building or" the. like, by two hooks 2i and 22* which are removably secured tothe rear apices of the upper triangle.

which it is to housed. and the hooks are securedin place by wing nuts 25.

In the form of the invention selected for illustration, the bracket is mounted on a Wall. having acornice and a U-shaped oh set adapter 2'?- is. bolted to the lower triangleto-engage the Wall. 28. so-v that the uprights; of the. bracket will be in vertical positionsv and thus support the hoist B in. vertical position. As shown in Fig. 6., the

adapter Zzlis provided with aseries o-fv bol-tholes 29 in each of its. legsso that it canv be: mounted. inthe desired position on the bracket for cornices or overhangs of diffierent thicknesses. The adapter is secured tothe; lower triangle by bolts- 3.0% projecting from the; lower ends of the uprights Iii and ill, to which theheads of the bolts areweided, and nuts. Elli. threaded on the bolts.

The swinging hoist. B. comprises a I -shapedtubular member havinga standard 3-! and a cross-arm 32 at; the upper end of the standard: and at right angles thereto, and! which is braced from the standard by diagonals 3-3 and. 374. The standard is supported on its; lower end on a on cular bearing plate 35 having a tubular or cylin drical guide 36: of a diameter such that the stand.-

ard. will. turn freely thereon and which is welded at its lower end, to the plate 35. The standard passesfreelythrough av central opening in a oular guide plate 31 which is welded to the upper triangle of the bracket. A. suitable pulley- 38'. is mounted on one endof the cross-arm 32' and a similar pulleyis. mounted on. the other end; of the cross-arm. 'A rope 559- which passes over both; pulleys has. a hook 4! at one endfor sup" porting a, bucket 42' which is raised and lowered by the operator by pulling in or letting out the other end of the rope.

In. use, to raise materials to a floor or to the root of a building, or to lower debris therefrom, or to acoomplishrboth of these functions at same time; the bracket A is secured inplaoe to awall of the building at the desiredelevation by means or the bracket hooks 2i and 22- which are first attached to the bracket inthecorrect r positions by the bolts and

nuts

24 and 25 for the particular thickness of the: wall to which the bracket is: secured. With a wall having an offset or a cornice as shown in Fig. 2, the ofiset adapter 2?: will be utilized and attached to. the lower part of the bracket in a position suchthat when it is in contact with the Wall, the standard 38 of the hoist will; be disposed vertically. With no oiiset or cornice, it will not be necessary to use the offset. adapter, because the uprights l6 and I8 of the bracket will engage around the pipe bearing 36. The operator of the hoist, standing on the ground, hooks the bucket 42 on the hook 4|, and with the cross-arm 32 of the hoist in a position substantially parallel to the face of wall 28, he pulls on the free end of the rope 40 and thereby raises the bucket to the desired height at or above the top of the wall 28. At this height, the operator then moves the bucket end of the arm toward and over the wall 28, by pulling on the rope in a direction away from the face of the wall. The rope is then released until the bucket is resting on the top of the wall, or if additional assistance is available, the bucket may be swung inwardly of the wall to the floor or to a platform or scaffold. After the bucket has been emptied, it is raised by the hoist, the cross-arm is moved by the rope so that the bucket will clear thewall and it is lowered to the ground. I

A two-way operation can be effected by having hooks and buckets on both ends of the rope, so

that as one bucket is raised the other is lowered and vice versa' With this arrangement, debris can be lowered as material is hoisted.

B'y suspending the hoist from a wall of a building, the upper floors and roof areas with which the hoist is used are left entirely free for working conditions. Only one man is required to operate the hoist. He pulls the load to the roof or to the top of the parapet area and places the load without the need of an attendant. As previously mentioned, the hoist will provide a two-way operation for materialshoisting materials while debris is lowered. Additionally, the bracket hooks and the offset adapter are designed so that the hoist can be used with or without any projection of cornice or parapet.

A preferred form of the invention has been selected for disclosure herein. Inasmuch as the several parts of the hoist disclosed without transcending the principles of the invention, it i will be understood that the invention is not tobe 1 limited excepting by the scope of the appended claims.

What is'claimed is:

1. A portable hoist adapted to be attached to a wall of a building, comprising a bracket having two triangular sections secured together in superimposed, spaced and aligned relationship, a hook at each end of one side of the upper sec-' tion for suspending the bracket from said wall, means for detachably securing the hooks in different positions to the upper section to adjust the distance between the outer ends of the books 1 and said side of the upper section, a U-shaped 4 wall of a building, comprising a bracket having two triangular sections secured together in superimposed, spaced and aligned relationship, a hook having a curved portion and a substantially straight portion, the straight portion having apertures spaced approximately along the axis thereof, bolt and nut means for detachably securing the straight portion of a hook at the desired point thereof to each end of one side of the upper section for suspending the bracket from a wall, a U-shaped adapter having spaced legs and a substantially straight portion extending between and approximately normal to the legs, each leg having apertures spaced substantially along the axis thereof, bolt and nut means for detachably securing the legs at the desired points thereof to the ends of the sideof the lower section corresponding to said one side of the upper section to space the lower part of the bracket the desired changes may be made in the form and location of l adapter detachably secured to the ends of the means at the apices of said sections opposite said one and corresponding sides of the sections for rotatably supporting a standard with its axis in a substantially vertical position, a cross-arm attached at an intermediate point thereof to the upper end of the standard, and a pulley at each end of the cross-arm.

" 2. A portable hoist adapted to be'attached to a distance from said wall} means at the apices of said sections opposite said one and corresponding sides of the sections for rotatably supporting a standard with its axis in a substantially vertical position a cross-arm attached at an intermediate point thereofto the upper end of the standard, and a pulley at each end of the crossarm. 1

3. A portable hoist adapted to. be attached to a wall of a building comprising a bracket having two triangular sections secured together in superimposed, spaced and aligned relationship, a hook at each end of one side of the upper section for suspending the bracket from said wall, means for detachably securing the hooks in different positions to the upper section to, adjust the distance between the outer ends of the hooks and said side of the upper section, a U-shaped adapter detachably secured to the ends of the side of the lower section corresponding to said one side of the upper section, the adapter being securable in different positions to adjust the distance of the part connecting the legs thereof from said corresponding side of the lower section, a bearing plate at the apex of said lower section opposite the side to which said adapter is secured, a cylindrical guide on the bearing plate, a guide plate having an aperture therein and disposed at the apex of the upper section and above said bearing plate, a tubular standard having its lower end on said bearing plate with said guide in the lower portion of the standard, the standard passing through the aperture in the guide plate and being freely rotatableon the bracket about the longitudinal axis of the standard, a cross-arm attached at an intermediate point thereof to the upper end of the standard, and a pulley at each end of the cross-arm.

' LEONARD F. DAKIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES" PATENTS Number Name Date Derrick Marsh Feb. 12, 1836 234,611 Quintavelle et al. Nov. 16, 1880 242,124 French May 31, 1881 634,586 Petterson Oct. 10, 1899 844,148 Leger- Feb. 12, 1907 859,146 Stewart July 2, 1907 1,026,901 Brown May 21, 1912 1,878,642 Rassmussen Sept. 20, 1932 2,338,317 Coates. Jan. 4, 1944