US734019A - Crane. - Google Patents

Description

PATBNTBD JULY 21, 1903.

A. P. VAN TUYL.

CRANE.

APPLICATION FILED mm: 19,, new,

2 SHEETS-SHEET 1 N0 MODEL.

WITNESSES A TTOHN E YS PATENTED JULY 21, 1903.

A. P. VAN TUYL.

CRANE. APPLICATION PI'LED'JURB 19, 1901.

2 SHEETS-SHEET 2.

N0 MODEL.

m T N E V m WITNESSES M 2 W y THE-bums PETER: m. momumo" wAsl-amarou. n. cy

we. 734,0i9.

UNITED STATES ANDREW P. VAN TUYL, OF BRO LYN,

Patented July 21, 1903.

PATENT OFFICE.

NEW YORK, ASSIGNOR OF ONE- V CRANE.

sirnctnrcazrion rermin part of Letters Patent No. 734,019, dated Jul 21, 1903.

Application filed June 19, 1901.

To all whom it may concern: I

Be it known that I, ANDREW P. VAN TUYL, a citizen of the United States, and a resident of the city of New York, borough ofBrook lyn,in the county of Kings and State of New York, have invented anew and Improved Crane, of which the following is a full, clear, and exact description.

The invention relates to cranes, and has for its object to produce a self-supporting crane. provided with a Windlass or rope-pulley attachment for hoisting or lowering articles of moderate Weights perpendicularly or at an incline -as, for example, out of or into a wellhole, cellar, or stairway.

.A further object of the invention is to provide an improved method of arrestingv the outward swing of the hinged supportingframes of any self-supporting crane and securing the same at a fixed angle of support when in use, as well as to, fold in compactly on the supporting-frames when the latter are closed and the crane is not in use.

Another purpose of the invention is to provide an improved holdfast-catch for a self-supporting crane to compactly hold the loosehinged supporting-frames close to the main frame of the crane when the crane is not in use, as well as to quickly release the holdfastcatch aforesaid when the crane is required for use.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully' set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of the improved crane in a position to raise a weight perpendicularly. Fig. 2 is also a side elevation of the improved crane,illustrating it in position for hoisting a weight at an incline or stairway. Fig. 3 is a side elevation of the crane folded. Fig. 4 is a rear elevation of the folded crane. Fig. 5 is an enlarged horizontal section through a portion of the crane, illustrating the holdfast-catch for holding the primary and secondary sections of the supporting-frame close to the main frame; and

Serial No. 65,154. (No model.)

Fig. 6 is an inner face view of a part of a side bar of the main carrying-frame, alsodrawn upon an enlarged scale and illustrating the check for the Windlass and the manner in which the Windlass is supported.

The crane comprises the main frame A and the supporting frame B, made in two sec tions-namely, a long section Z2 and a shorter section beitherof which sections may be brought into use, according to whether the crane is to be held in a position for ordinary use or for raisinga weight perpendicularly or whether the crane is to be placed at an inclination which would enable an improved hoisting device carried by the crane to raise a weight from a stairway or an inclined plane, as shown in Fig. 2.

The main frame A is preferably made in the form of a ladder, as shown in the drawings, wherein 10 represents the side bars, 11 the steps, and 12 a top step or platform, having the ordinary side pieces,so that the said frame, with its supporting-frame, also forms a stepladder. Through the side pieces of the step orplatform 12 a rod or bar 13 is passed. The upper ends of the'members of the longer or primary section b of .the supporting-frame B are pivoted or hinged on the said bar 13, as are likewise the side members of the shorter or secondary section of the said supportingframe. The secondary or shorter section of the supporting-frame is adaptedto lie within or between the side members of the primary 'sectionof said supporting-frame, as is shown in Fig. 4. Preferably the rod 13, carried by the platform 12, passes through guides 14, Se cured to the under face of the said platform, as shown in Fig. 4, and between these guides a pulley 15 is connected with the said rod 13, as is also best shown in Fig. 4. Thesecond'ary section of the supporting-frameB isprevented from dropping 'too far between thesidemembers of the primarysection by attaching crossbars 16 and 17 to the rear face of the side members of the secondary frame, which cross-bars are of sufficient length to engage with the corresponding faces of the primary section of the said supporting-frame. Crossed braces 18 extend from the cross-bar 16 to the cross-bar 17 forming thereby a guideway 19, as is shown in Figs. 1, 2, and 3. A check-rod 20, substantially U-shaped, is employed to limit the movement of the supporting-frame relative to the step-frame, and the bow-section of this check-rod is passed through the guideway 19 of the secondary section of the supportingframe, and the ends of the check-rod are attached to the outer faces of the side members of the step-frame A by means of suitable pins 21. The side members of the primary section of the supporting-frame B are provided with toothed extensions 22, and when the two sections of the supporting-frame are brought together and are moved together, which is the case when the crane is to be placed in practically an upright position, as shown in Fig. 1, the bow portion of the check-rod 20 will engage with these tooth projections 22, as shown in Fig. 1, thus holding the two frames of the crane in a position to steady the same, enabling the steps to be safely used or a weight to be raised perpendicularly, as will be hereinafter described. When the crane is to be placed over a stairway, however, or over an inclined plane to raise a weight in an inclined position, as shown in Fig. 2, the primary section of the supporting-frame is folded close to the step-section of the frame, and the rear portion of the crane is supported by the secondary section of the said supporting-frame. In this event the supporting and the main frame are held separated by the check-rod, which will have traveled at its bow-section to the upper section of the guideway 19, as is shown in Fig. 2. The check-rod 20 can be readily sprung past the toothed projections 22 when necessary. The members of the primary section of the supporting-frame B are connected by suitable cross-bars 12.

Journal-bearing plates 23 are attached in any suitable or approved manner to the inner faces of the side members of the front frame A, extending rearwardly beyond said members, and in the rearwardly-extending portions of these journal-bearing plates the trunnions of a winding rolleror drum 24 are mounted to turn. One of said trunnions is fitted to receive acrank-arm 25, whereby the said roller or drum may be readily turned, and this crank-arm may be made detachable from the said trunnion and when not in use placed in a receptacle which may be provided beneath the platform 12.

At one end of the drum or winding-roller 24 projecting lugs 26 are formed, and these projecting lugs are adapted to be engaged by a pawl 27, fulcrumed upon one of the journalbearing plates 23, as shown in Fig. 6. The pawl is provided with a forwardly-extending tailpiece 28, and this tailpiece is adapted to engage with the projection from a hunch-back spring 29, which is shown in Fig. 6. When the pawl is in position to engage with the lugs upon the drum or winding-roller 24, as shown in positive lines in Fig. 6, the tailpiece of the pawl engages with the upper portion of the. projection from the said spring 29, and when the pawl is carried out of the path of the lugs of the winding roller or drum 24, as is shown in dotted lines in Fig. 6, the tail-section of the said pawl engages with the lower portion of the projection from the spring 29. In order that the pawl 27 may be quickly and conveniently operated, a handle 30 is provided for said pawl, which handle is in the nature of a hand-lever. Thus it will be observed that by the manipulation of this hand-lever 30, which is free at its outer end, the pawl 27 may be carried out of the path of the projections or lugs 26 upon the winding shaft or drum or be brought in such position as to engage with such lugs, thus enabling a person to have convenient and ready control of the windingdrum under all conditions of use. A cable, rope, or chain 31 is attached to the winding roller or drum and is adapted to be wound thereon. This cable, rope, or chain is passed over the pulley 15, the other end of the cable being provided with means for attachment to a weight or article 32 to be lifted.

The two frames may be held locked together through the medium of the catch shown in I Fig. 5. This catch consists of a member 33, which is secured to the outer side face of the side member of the step-frame A of the crane and extends rearwardly beyond said member, being provided at its rear end with a preferably semicircular head 35, and a second member of the latch is attached to the outer portion of a side member of the primary section of the supporting-frame B, and this section of the latch extends forwardly beyond said member and is then carried inward and then horizontally forward parallel with the extended portion of the latch-section 33, and the forwardly-extending part 34 of the latch-section is provided with a semicircular head or enlargement 36 on its outer face. When the two enlargements 35 and 36 of the latch-sections are brought together, a locking contact is effected between the two sections of the spring, which locking contact may be readily broken by quickly pulling one frame away from the other. The latch-section 34,attached to the primary section of the supporting-frame B, is carried in a bow-spring 38 over the inner face of the member of the primary section, as is shown in Fig. 5, to be engaged by a second spring 39, attached to the corresponding member of the secondary section of the supporting-frame, and when these two parts 38 and 39 are brought together the secondary and primary sections of the supporting-frame will be held locked together, although one section may be readily separated from the other when desired.

It will be observed that a crane constructed as above set forth, in addition to being employed for lifting weights either perpendicularly or at an inclination, may be used-as a step-ladder, and it will also be observed that when the supporting-frame is carried toward and is secured to the main frame A the checkrod will automatically follow the movement of the supporting-frame and in the folded po- ICC IIO

sition of the two frames will lie fiat and out of the way, but will always be ready to support the two frames or either section of the supporting-frame when the ladder is set up for use or for hoisting purposes.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A crane, comprising a main frame, a supporting-frame formed of two' sections of unequal length and each hinged to the main frame, a pulley at the top of the main frame, and a Windlass mounted upon the main frame intermediate of its ends, as set forth.

2. Acrane, comprising a main frame,a supporting-frame formed of two sections of unequal length and each hinged to the main frame, an adjustable connection between the main and supporting frames, a pulley at the top of the main frame, and a Windlass mounted on the main frame intermediate the ends thereof, as set forth.

3. A crane, comprising a main frame having a platform at its upper end from which a pulley is suspended and provided with a windlass mounted on its side bars, and a supporting-frame formed of two sections of unequal length, ,and each hinged to the platform of the main frame, as set forth.

4. A crane, comprising a main frame having a platform at its upper end from which a pulley is suspended and provided with a windlass on its side bars, and a supporting-frame formed of two sections of unequal length and fitting one within the other, the said sections being hinged to the platform of the main frame on a common pivot, as set forth.

5. In a crane, a main frame provided with a platform at its upper end, said platform being provided with a rod or bar extending from its side pieces and with guides on its under surface through which the rod or bar passes,

a supporting-frame hinged on the rod of the platform, a pulley suspended from the said rod or bar, a Windlass mounted on the side bars of the main frame, and a rope or chain secured to the Windlass and passing over the said pulley, as set forth.

6. In a crane, a Windlass comprisinga Winding-drum mounted to turn on one frame of the ladder, the said winding-drum being provided with peripheral spurs, a spring-controlled pawl adapted for engagement with said spurs of the winding-drum, a spring having a fixed and a free member and an extension from its free member, and an extension from the pawl which engages with the extension from said spring, as described.

7. In a crane, a main frame, a supportingframe formed of sections of unequal length pivoted to the main frame, the shorter section being adapted to lie within the longer section and provided with a guideway, and a rod pivoted to the main frame and working in the guideway of the shorter section of the supporting-frame, as set forth.

8. In a crane, a main frame, a supportingframe formed of sectionsof unequal length pivoted to the main frame on a common pivot, the shorter section being adapted to lie within the longer section and provided with a guideway, the longer section being provided with toothed extensions, and a U-shaped rod pivoted to the main frame andworking in the guideway of the shorter section of the supporting-frame, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

ANDREW P. VAN TUYL.

Witnesses:

J. FRED. ACKER, JNo. M. BITTER.

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