US445193A - Thirds to david g - Google Patents

Description

3 Sheets-Sheet 1.

(No Model.)

1). LQOSBORN. COMBINED AERIAL LADDER AND ELEVATOR. No. 445,193.

Patented Jan. 27; 1891.

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No. 445,193. Patented Jan. 27, 1891.

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D. L. OSBORN. GOMBINED AERIAL LADDER AND ELEVATOR. No. 445,193. Patented Jany27', 1891.

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DAVID L. OSBORN, OF KANSAS CITY, MISSOURI, ASSIGNOR OF TWO THIRDS TO DAVID G. BLAIR AND EMERSON S. NORTI'IUP, BOTH OF SAME PLACE.

COMBINED AERIAL LADDER AND ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 445,193, dated January 27, 1891.

Application filed November 15, 1890, Serial No. 371,573. (No model.)

To all whom it may concern.-

Be it known that I, DAVID L. OSBORN, of Kansas City, Jackson county, Missouri, have invented a certain new and useful Combined Aerial Ladder and Elevator, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to improvements in aerial ladders; and it consists in the peculiar combination and arrangement of devices, as will be hereinafter specified, and pointed out in the claims.

My object is to provide-an aerial ladder supported upon a truck of any suitable size, that may be run in an alley or .any narrow space, and thus in case of fire or panic, when the occupants of the building are unable to reach the front doors or windows, may be utilized in places inaccessible to the aerial ladders of ordinary construction. I also use mechanism, to be used in cases where the ladder cannot be used directly against the building, for lnclining or throwing said ladder from its perpendicular to the desired position against the building. This aerial ladder may also be used in the capacity of a water-tower for elevating the hose and instruments for de1nolishing windows, &e., to a convenient position for operation against the fire, as will be readily understood, and for derricks and other purposes.

Referring to the drawings which illustrate my invention, Figure l is a side elevation of my invention in its extended or elevated position, the ladder inclining forward, as shown, and having its upper portion broken away. Fig. 2 is a central longitudinal section of the invention removed from the truck and showing the chair secured at the upper end of the ladder. Fig. 3 is a bottom plan view of my invention in its closed or folded position. Fig. at is a rear elevation of my invention, showing the ladder elevated to a perpendicular position when used on rough or uneven ground by the operation of said mechanism, hereinafter described.

Similar letters refer to similar throughout the figures, in whichparts A represents a truelgconsisting of the framework B, from the forward end of which extends the curved guard-frame C, under which is suitably secured the axle D, having the wheels E secured to its opposite ends and adapted to operate under the guard 0 when desiring to make a short turn. Secured by suitable means to the upper surface of the guard O are the longitudinally extending curve-springs F, having mounted upon their rear ends the seat G, the forward ends of said spring being connected by the foot-board II. Secured under the frame B, at a suitable distance from its rear end, is the transverse bar I, which has its ends bent upwardly and outwardly, forming an axle, upon which are journaled the wheels K.

The frame B is provided at a suitable distance apart with the laterally-extending ears I) b from either side, and has 3' ournaled thereon in a suitable manner the longitudinally-extending and horizontal worm-bars L, having keyed at theirforward ends the hand-wheels M. These rods L are provided with the right and left hand screw-threads extending from the inner sides and meeting at a point midway between said ears Z).

Resting upon the frame 13 is a frame N, which is provided with the outwardly-extending ears or extensionsn in vertical alignment with and above the ears I) of the framework B. These ears are connected by longitudinally-extending rods 0, parallel with the rod L, and provided with loosely-journaled collars P, having the depending cars, which are engaged on either side by the upper ends of the parallel frames Q, which are pivoted together at R and have their lower ends pivotally bolted to an upwardly-extending ear .9 of a collar S, provided with the interior screwthreads engaging and adapted to travel on worm-bars L when the hand-wheels are operated.

The operation of the hand-wheel M in the correct direction causes the screw-threaded collar S, engaging right and left screw-threads of worm-bar, to travel toward or from each other, thus causing the horizontal contraction and the vertical extension of said frames Q,

as will be readily understood. This arrangenient and connection between the frames B and N allows, as will be readily understood, the frame N to be inclined laterally toward either side, whenever desirable or necessary, by operating either hand-wheel M. The rear end of the said bars of the frame N are connected together by means of the worm-bani, which is provided from the inner side bars of the frame N with the opposite or left and right screw-th reads U, extending midway between the said frame-work. Engaging and adapted to travel on the said worm-bar, which is provided with the hand-wheel t, keyed on its extended ends, are the interiorly-screwthreaded collars V, to which are pivotally secured'the lower ends of the frame-work W, constructed on the lazy-tongs principle. The upper ends of said frame-work WV engage collars X, loosely journaled on the transverse bar Y, which connect at their rear ends the side bars Z of the frame A. These looselyjournaled collars are in alignment with the screw-threaded collars V, and are adapted to operate simultaneously with said collars, and when hand-wheel t is operated causing the contraction and Vertical extension of the frame V, and thus elevating the rear end of the frame A, causing the forward inclination of the ladder, as shown in Fig. 1.

The forward ends of the side bars Z of the frame-work A are provided each with the depending pairs of ears B, which inclose and are pivotally bolted to the forward ends of the side bars of the frame-work N. The forward ends of the sidebars of f rame-work A are also connected by cross-bar O, in which 'is journaled the forward end of a worm-bar D. The rear end of worm-bar D is loosely journaled in the depending castings or bars E, which are secured a suitable distance apart. Keyed on the worm-bar D between the castings E is a pinion F, meshing with the teeth of a cog-wheel G, operating between said castings E, and keyed or otherwise secured on the rearwardly-extending shaft H, which is loosely journaled in the transverse bar 1 connecting the rear ends of the framework A, the rear end of said shaft H having keyed or otherwise secured thereon the hand wheel J. Y

The ladder E is composed of a series of pairs of individual ladders K L M, 850., each of the said individual ladders having bars or steps connecting its two opposite members, the said individual ladders being connected together on the principle of the lazy-tongs, the said individual ladders thus forming the successive frames thereof. The ladder E thus formed is supported between and upon the side bars of frame A, the lower forward end of the outer frame of the lower pair of ladders L having its cylindrical connecting bar or round N pivotally secured in the upturned loops or eyelets O, constructed at the forward end of the straps P, bolted or otherwise secured to the upper surface of the side bars Z of the said frame. The inner pair of frames L have secured to their lower sides the depending curved arms Q, which are provided with the slots R, engaging and adapted to travel on the cylindrical ends of cross-bar S, which is enlarged at. its central portion and provided with the screw-threaded perforation T, surroundingand engaging the screwthreads of worm-bar D. The cylindrical ends of cross-bars S are screw-threaded and engaged by the securing-nuts s. The lower ends of the inner pair of frames of the ladder L are connected together by the round or cylindrical connecting-bar l, the opposite ends of which project beyond the outer sides of said frame L and engage and are adapted to travel in the longitudinallyextending slots V on the inner sides of the parallel side bars Z of the frame-work A. Secured at the upper end of the ladder is the chair \V, composing the horizontal platform X, restiu g and secured upon the upper edges of the forwardly and rearwardly extending side bars Y, the forward ends of which are pivoted on the cross bar or round Y of the forward arms of the upper frames of the ladders, said bars Y being also provided with the extended slots Z, the rear ends of which are in horizontal alignment with the cross-bar Y of the forward arms of upper frames of the ladder E, in which slots is intended to slide or travel the cross-bar A, connecting the rear arms of the said upper frame of the ladder E when ladder is raised or lowered. The platform X, forming the base of the chair V, isprovided with the opening C,in which is hinged the trap-door D. Secured at the upper end of vertical standards E, bolted to the upper surface of the platform, is railing F, the forward open end of which is adapted to be closed by the pivotal latch-bar G.

The several pivoted frames of the ladder are provided with a suitable number of intermediate steps or rounds H for the ascent and descent of the firemen and other persons. The hand-wheel J, being operated, causes the operation through the meshing gear wheel and pinion G and F of the worm-bar D, which, operating in the screw-threaded perforation of the cross-bar S connecting the lower curved ends Q of the rear frame L, causes the said frame to move toward the forward and permanent pivotal rod N connecting the forward lower arms of the ladders. The impulse communicated to the lower pair of leverframes causes the simultaneous contraction and vertical extension of the ladder, as will be readily understood.

The trap-door in the platform X allows the person ascending to enter the chair without difficulty, or to descend by means'of the steps, if desired. YVhen desiring to lower the ladder, the operation of the hand-wheel J in the reversed direction causes the ladder to descend and fold, as will be readily understood, when the latch-bar is opened and the passenger dismounts.

IIC

Should the ladder be elevated in such position that it would be dangerous or impossible to enter the chair from the window, door, or roof of the building to which it is applied, the ladder may be inclined forwardly by operating the hand-wheel 2 until the chair shall be adjacentor opposite to the position on the building which the endangered person or persons may occupy, which, as will be readily understood, allows the ladder, which may be of any height without materiallyaffecting its strength, to reach any side of a building near which a wagon of ordinarysize may be placed, as illustrated in Fig. i. The ladder, by operating the adjustable side frames, may be righted or brought to a-perpendicular position,as will be readily understood.

\Vhen used as a water-tower, the hose may be secured to the platform, or afiremanholding the nozzle of the hose may be elevated to a desired and advantageous position, allowing him by this means to direct. the water and reach the places inaccessible from the ground, and where it is also very dangerous to attempt to reach from the ladders 110w in use. The railing at the upper end of the platform or chair maybe provided with suitable appliances adapted to secure or hold the tools, &c., necessary for demolishing windows and doors in such manner that they may be easily attached when necessary.

In the present application I do not desire to claim any particular construction of the ladder E as in another application filed by me in the United States Patent Office, September 19, 1890, Serial No. 365,479, I have claimed the slotted curved ends of the lower frame shown herein.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a fire-escape, the combination, with the frame B, of the frame N, carried thereon, a worm-bar on each side of the said frame B, and lazy-tongs on each side of the said frames, having their lower arms engaged by the bars upon the corresponding side and their upper ends movably connected with the said frame N,whereby the latter may be held horizontal without regard to theinelination of the frame B, as described.

2. The combination, with a frame B, of a worm-bar on each side of the said frame and carried thereby, threaded collars upon the said bars, a frame N, carried on the said frame B and having ears upon its sides, a rod carried in the said ears on each side of the frame N, collars sliding on the said rod, and lazytongs having their upper and lower ends pivoted to the collars upon the rod and upon the worm-bars, as described.

3. The combination, with a frame N, of a transverse worm-bar in the rear end of the said frame N, a frame A, pivoted to the for ward end of the frame N and carrying a suitable tower upon its forward end, and lazytongs having their lower ends engaging the said wormbar in the frame N, and their upper ends movably connected to the rear of the frame A, as described.

4. The combination, with a frame N, of a transverse w orm bar carried in the rear end of the frame N, threaded collars V upon the said worm-ha r, a frame A, having its forward end pivoted to the forward end of the said frame N, and having a lazy-tongs structure on its forward end,a' transverse rod Y on rear of the frame A, collars X, sliding upon the said rod Y, and lazy-tongs having their upper ends connected to the said collars X and their lower ends to the said threaded collars V, as described.

5. In a tire-escape, the combination, with the frame B, of the frame N, carried thereon, a worm-bar on each side of the said frame B, and lazy-ton gs on each side of the said frames, having their lower arms engaged by the bars upon the corresponding side and their upper ends movably connected with the said frame N, whereby the latter may be held horizontal without regard to the inclination of the frame B, a transverse worm-bar in the rear end of the said frame N, a frame A, having its forward end pivoted to the forward end of the frame N and carrying a suitable tower upon its forward end, and lazy-tongs having their lower ends engaging the said worm-bar in the frame N and their upper ends movably c011- nected to the rear of the frame A, as described.

6. In a fire-escape, the combination, with the frame B, of the frame N, carried thereon, a worm-bar on each side of the said frame 13, lazytongs on each side of the said frames, having their lower arms engaged by the bars upon the corresponding side and their upper ends movably connected with the said frame N, whereby the latter may be held horizontal without regard to the inclination of the frame B, a transverse worm-bar T, carried in the rear end of the frame N, threaded collars V upon the said worm-bar T, a frame A, having its forward end pivoted to the forward end of the said. frame N and having a lazy-tongs structure on its forward end, a transverse rod Y in the rear of the frame A, collars X, sliding upon the said rod Y, and lazy-tongs having their upper ends connected to the said collars X and their lower ends to the said threaded collars V, as described.

7. The combination, with a frame B, of a worm-bar on each side of the said frame and carried thereby, threaded collars upon the said bars, a frame N, carried on the said frame B and having ears upon its sides, a rod carried in the said ears on each side of the frame N, collars sliding on the said rod, lazy-tongs having their upper and lower ends pivoted to the said collars upon the rod and upon the worm-bars, a transverse worm-bar in the rear end of the said frame N, a frame A, pivoted to the forward end of the frame N and carrying a suitable tower upon its forward end, and lazy-tongs having their lower ends engaging the said-Worm-bar in the frame N and their upper ends movahly connected to the rear of the said frame A, as described.

8. The combination, with a frame B, of a worm-bar on each side of the said frame and carried thereby, threaded collars upon the said bars, a frame N, carried on the said frame B and having ears upon its sides, a rod carried in the said ears on each side of the frame N, collars sliding on the said rod, lazy-tongs having their upper and lower ends pivoted to the collars upon the rod and upon the Worm-bars, a transverse Worm-bar T, carried in the rear end of the frame N, threaded collars 'V upon the said Worm-bar T, a frame A,

having its forward end pivoted to the forward end of the said frame N and having a lazy-tongs structure on its forward end, a transverse rod Y in the rear of the frame A,

collars X, sliding upon the said rod Y, and

lazy-tongs having their upper ends connected to the said collars X and their lower ends to the said threaded collars V, as described.

In testimony whereof I affix my signature in presence of two Witnesses.

DAVID L. OSBORN. Vitnesses:

G. Y. THoRPE, H. E; PRICE?

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