US1504034A - Elevator - Google Patents

Description

Aug. 5 1924-.-

S. P. ERWI N ELEVATOR 3 Sheets Sheet 1 Filed Sept. 19, 1922 INVENTOR,

A TTORNEY.

ELEVATOR 3 Simets-Sheet Filed Sept. 19: 1922 INVENZ'OR.

' HTTORNEY.

Patented Aug. 5, 1924.

asaanaa SAMUEL P. EBWIN, OF SANTA ROSA, CALIFORNIA.

ELEVATOR.

Application filed September 19, 1922. Serial No. 589,228.

T 0 all whom it may concern:

Be it known that I, SAMUEL P. ERWIN, a citizen of the United States, residing at Santa Rosa, in the county of Sonoma and State of California, have invented certain new and useful Improvements in Elevators, of which the following is a specification.

This invention relates to improvements in an elevating apparatus, more particularly to that class of portable elevating apparatuses, employed in warehouses, stores, and the like, to facilitate the handling of certain classes of merchandise, more particularly, bales of hay, and sacks of grain, but it is to be understood that the apparatus can be employed for any purposes wherein it is found applicable, and the invention has for its object to provide an apparatus of such class with means, in a manner as hereinafter set forth, for conveniently and expeditiously conveying from a lower to a higher level, or from a higher to a lower level, merchandise, and further for discharging the merchandise when the destination therefor has been reached.

A further object of the invention is to provide an apparatus of such class, in a manner as hereinafter set forth, with a traveling carriage provided with a carrier for the merchandise, the carrier having means to cause the automatic dumping therefrom in a sidewise direction of themerchandise at various levels.

A further object of the invention is to provide an apparatus of such class, with means in a manner as hereinafter set forth, for automatically discontinuing the operation of conveying the merchandise when the latter has been conveyed to its point of destination.

A further object of the invention is to provide an apparatus of such class, with means in a manner as hereinafter set forth, to adjust the supporting frame of the apparatus, so that the merchandise can be delivered to different levels.

Futher objects of the invention are to provide an apparatus of such class, in a manner as hereinafter set forth, which is comparatively simple in its construction and arrangement, portable, strong, efficient in its use, conveniently operated, readily assembled and comparatively inexpensive.

With the foregoing and other objects in view, the invention consists of a novel construction, combination and arrangement of parts, as hereinafter more specifically described, and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views Figure 1 is a sectional side elevation of an elevating apparatus in accordance with this invention,

Fig. 2 is a front elevation thereof,

Fig. 3 is a sectional view of the means for elevating the frame of the apparatus to provide for discharge at various levels,

Fig. 4 is a side elevation,-broken away,

illustrating the carriage and carrier-at the upper end of the apparatus,

Fig. 5 is a fragmentary View, in side elevation, of the lower portion of the supporting frame and base and further showing one of the trip arms in operative position and another in inoperative position.

Fig; 6 is a fragmentary view, in front elevation, illustrating the carriage and carrier and the sidewise dumping element in full and in dotted lines.

Fig. 7 is a section on line 7-7 of Fig. 5,

Fig. 8 is a fragmentary view of the supporting frame in side elevation, showing the adaptation with the lower end thereof, of a modified form of carrier,

Fig. 9 is a side view, and

Fig. 10 a front View of the modified form of carrier.

Referring to the drawings in detail, 1 denotes a portable frame, provided at the front and rear thereof, with depending brackets 2, carrying wheels 8, and the said base 1 is formed with a pair of side and end bars, and with the front end bar positioned in wardly with respect to the forward ends of the side bars. The brackets 2 depend from the end bars of the base 1. The rear bar of the base 1 is indicated at 4- and has secured thereon a pair of spaced keepers 5 for a purpose to be hereinafter referred to, and arranged forwardly of the end bar 4; is a pair of standards 6, only one of which is shown, and mounted in the standards 6 is a shaft 7, provided with a pulley 8, which is operatively connected with a motor 9, supported on the platform 1 through the medium of the endless belt 10.

A clutching mechanismmot shown, is mounted on the shaft 7, for the purpose of clutching and unclutching the wheel 8 to and from the shaft 7. The levers 11 and 12, pivoted at tinue the operation of the shaft 7will be hereinafter referred to.

Supported by the base 1, is a rea'rwardly inclined and adjustable supporting frame,

which provides a trackway,-and it consists of a pair of elongated bars 1 3, 14, each having its inner face provided with a longitudinally extending channel 15 which constitutes a combined track and guideway. Each of the bars '13, 14, in proximity to its lower end, is pivotally connected as at 16, to the forward end of a side bar of the base 1. The lower ends of the bars 13', 14, are'positioned inwardly with respect to the forward ends of the side bars of the base 1. The'bars 13, 14, are arranged in spaced relation and. have positioned therebetween, as well as secured to the under sides thereof, a series of transversely extending combined brace and coupling members 17. Arranged between the bars 13', 14, in proximity to the lower ends thereof, is a transversely extending shaft 18, which carries a pulley 19, and the purpose of the latter will be hereinafter referred to. Positioned between the bars 13, 14, in proximity to the upper ends thereof, is a shaft 20, provided with a pulley 21, and furthermore said shaft 20 has connected therewith, oppositely disposed bracket arms 22, which are secured to the inner faces of the bars 13, 14, whereby a supporting means for the intermediate part ofthe shaft 20 is provided. The bracket arms 22 are fixedly secured to the bars 13, 14, as at 23. The pulley 19, as well as the pulley 21, is grooved. The upper end of each of the bars 13, 14, is formed with a circular extension 24, grooved as at 25, and which forms "a continuation ofthe channel 15. The 011' cular elements 24 are provided for directing the carriage and carrier, to be presently referred to, to dumping position, as indicated in dotted lines .in Fig. 1 and in full lines in Fig. 4.

The frame is maintained in an inclined position with respect to the base 1,through side bars thereof extending into the sides of the yoke 26, as at 28. Secured on the upper end of each of the sides of the yoke 26, is a three-way coupling 29, the latter having openings 30 for the passage of the sides of the yoke 27. The three-way coupling 29 provides means for connecting to the up per end of the sides of the yoke 26, a pair of transversely extending bars 31, which have their opposed ends connected together by afour-way coupling 32. The upper end of the yoke27 is pivotally connected to the supporting frame, at the rear :thereof,

through the medium of a pair of keepers 33. Connected to the top of the yoke 27 at 34 is a depending hanger rod 35, which extends through the four-way coupling 32 and carries on its lower end a pulley 36. Each of the rods or bars 31, is provided with a'han 'er 37 carr ing on its lower end a 5 pulley 38. The rear of the sides of the yoke 26, has secured thereto a pair of journals 39, in which is mounted a winding shaft 40, the latter projecting'from one side of the yoke 26', and carrying a crank handle 41, for the purpose of rotating the shaft 40 whenoccasion requires. The shaft 40 is provided with a conventional lock as indicated at 40 and which is in the form of a pawland ratchet. The ratchet is carried by the shaft 40 and the pawl by one of the arms of the yoke 26. The section 27 is vertically shifted, and the means for shifting it, consists of a flexible elevatmg member 42 which has each end thereof wound on the shaft 40, as at 43, 44. The member 42 travels'over the pulley 36 well as over the pulleys 38 and when the shaft 40 is revolved in either direction,'the by,

the supporting frame can be adjusted to' various positions, so that the merchandise can be conveyed to various levels.

Traveling lengthwise of the supporting frame, in the trackways 15, is a shiftable carriage consisting of a pair of transversely extending shafts 45, 46, which are arranged in parallelism and spaced from each other, and each ofwhichhas its ends provided with a roller 47, which travels in the traekways 15. The carriage further includes a pair of opposed stub shafts 4.8, which are spaced from the shaft 46, and each of which has its outer end provided with a roller 49 traveling in the trackways 15. Secured on the inner end of each of the stub shafts-48, so as to pivot thereon, is-the' forward end of a link 50, the latter being normallydisposed at a rearward and outward inclinatiom and is pivotally connectedas at 51 to the foe 1ng end bar 55, which is triangular in transverse sections' and acts as a spacing element for the upper end portion of the merchandise on the carrier. Each of the side bars 54 has an enlargement, at the rear end there of, as at 56, and which is apertured as at 57. The rear end of each of the side bars 54 is formed with an angle-shaped extension 58 and which provides supports for a combined holding and dtunping plate 59. The plate 59 has depending from its rear face a pair of eyes 60,61, and to the eyes 60, is connected to the lower end 62 of a dumping lever 63 which is pivoted as at 64 in one of the enlarged portions 56 of the side bar 54. The other eyes 61 are adapted to receive the lower outwardly projecting leg of one of the extensions 58.

The extensions of the side bars 54 of the carrier as well as the dumping plate 59 are so constructed, that the plate 59 can be ad justed with respect to the carrier so that the dumping action, which is sidewise can be had from either side of the carriage. In this connection, it will be pointed out that when dumping one side of the carriage, one of the angle-shaped ends of one side bar 54 acts as a support for the plate 59, while the other angle-shaped end provides a pivot, owing to the fact that it is extended in the eyes 61. By reference to Fig. 6, it is shown in dotted lines, the position of the parts when dumping from one side of the carriage, and if it be desired to dump sidewise from the other side of the carriage, the lever 63 is pivoted in the other bar 54, and the eyes 61 mounted on the angle-shaped end 58. To obtain this arrangement, it is obvious that the plate 59 is shifted to an opposite position to that shown in Fig. 6.

Interposed between the carriage and the carrier is pivotal support for-the carrier and which consists of a pair of elongated bars 65, each having the ends thereof bent at an angle and extending in opposite directions with respect to each other. The angleshaped portion at the rear end of the bar is indicated at 66, and the angle-shaped portion at the forward end of the bar is indicated at 67. The angle-shaped portion 66 projects outwardly, while the angle-shaped portion 67 projects inwardly. The angleshaped portions 67 are pivotally mounted on the stub shafts 48, and the angle-shaped por tions 66 are pivotally connected to the side bars 54 of the carrier frame, as at 68.

Connected to the shaft 46 of the carriage, is an elevating and lowering cable 15, which extends upwardly and over the pulley 21,

and then downwardly and winds on and off the shaft 7. When the shaft 7 is operated in one direction, the cable will elevate the carriage, the latter carrying the carrier therewith and when the shaft 7 operates in an opposite direction, the carriage will lower by gravity, carrying the carrier therewith.

The apparatus further includes means for discontinuing the operation of the shaft 7, when elevating the carriage, when the carriage arrives at the upper end of the supii porting frame and assumes dumping position, as illustrated in Fig. 1. This means consists of a sectional flexible member 69 and which has the sections thereof adjustably connected together as at 70, to provide for increasing and decreasing the length of the member 69, depending with respect to the inclined position of the supporting frame. The member 69 is formed of an upper and a lower section and the lower section travels over the pulley 19 and is connected to the turnbuckle or other adjusting device 70. The upper section of the member 69 is attached to the device 7 O and also to an elongated rod 71, having a hook 72 at its upper end. The rod 71 is mounted in a tube 7 3 which is secured on the front of the braces 17. To limit the downward movement of the bar or rod 71, a stop 74 is provided, and the latter is engaged by the hook 72, as clearly shown in Fig. 2 of the drawing. The hook end 72 of the rod 71 is positioned in the path of the shaft 46, so that when the carriage is traveling toward the upper end of the supporting frame, it reaches the position shown in Fig.

1, and the hook 72 will be engaged with the shaft 46, and the latter will carry the rod 71 therewith, which in turn will pull the member 69 thereby shifting the lever arm 12, so as to'uncouple the pulley 8 from the shaft 7, under such conditions, discontinuing the elevating movement of the carriage with the carrier thereon.

The apparatus further includes a means for automatically actuating the lever arm 63, causing thereby, the shifting of the plate 59, so as to sidewise dump the merchandise from the carrier. In this connection, it will be stated that the lever arm 63 is of length to project beyond either side bar of the supporting frame, when the lever is mounted in position, and each side bar of the supporting frame, has secured thereto, a series of spring-controlled trip arms, which are spaced from each other, so as to provide the operation of the lever arm 63, as the car riage moves upwardly at different heights so that the material can be discharged at different levels. The trip arms are indicated at 75, and pivotal-1y mounted as at .76. They are maintained normally in inoperative position and clear ofthe path of travel of the lever arm 63 through the medium of a pulling spring 77 which is eccentrically connected as at 78 to the upper end of the trip arm. Stops 79 are provided on the side bars of the frame for limiting the upward movement of the free end of the trip arm 78.

In Fig. 5 of the drawing, a trip arm 75 is shown in position to be engaged by the lever arm 63, so as to shift the free end of the arm 63 downwardly, causing thereby the tilting of the dumping plate 59, so that the material carried by the dumping plate can be discharged sidewise with respect to the car riage. The arms 75 are shifted manually to trip position, so as to be in the path ofthe upper or free end of the lever arm -63, and the trip arms are also restored to inactive position manually.

In Figs. 8, 9 and 10 of the drawings, a modified construction of carrier is set forth,

' and which is designed primarily for supd rollers 84-.

The operation of the shaft 7, say in a clock-wise direction, will wind the cable 15, whereby the carriage provided with a carrier will be pulled upwardly on the trackway. .The merchandise or material to be elevated will be mounted upon the carrier. The carriage will move upwardly untll the shaft 46 engages the hook 72 at the upper end of the rod 71, and as the carriage continues to move, the rod 71 will be carried 5 therewith, thereby shifting the sectional member 7 9, causing thereby the shifting of the lever arm 12, so as to uncouple the pulley 8 from the shaft 7,'under such conditions discontinuing the operation of the shaft 7 and the elevating movement of the carriage with the carrier thereon. At this point the carrier will have assumed the position shown in dotted lines in Figure 1 and the material discharged from the carrier. After the ma.- terial has been discharged from the carrier, the shaft 7 is thrown into operation so that it will travel in an anti-clockwise direction, slacking the cable 15, so that the carrier, that is to say the rear portion thereof, will move by gravity against the trackway, and on as the shaft 7 continues to revolve in an anti-clockwise direction, the carrier will move down the tra'ckway to normal position by gravity.

If it is not desired to discharge the ma riage, the trip arm 7 5, at the point the ma terial is to be discharged from,.is shifted manually to project in the path of the lever 63 so that as the carriage moves upwardly,

the free end of the lever arm 63 will engage V the trip arm 75, causing the swinging of the free end of the arm 63 downwardly as the lever arm 63 will shift on its pivot 64, and when the free end of the lever arm 63 moves downwardly, as shown in Figure 6, the plate 59 will swing on its pivot as indicated in dotted lines, causing thereby the sidewise dumpingof the merchandise or material.

Vhat I claim is 1. An apparatus for the purpose set forth comprising an upwardly traveling carriage, a carrier arranged thereon and extending lengthwise thereof, a supporting element for the carrier, said element having one end pivoted with the upper end of the carriage and its other end pivoted with the lower end of the carrier.

2. An apparatus forthe purpose set forth comprising an upwardly traveling carriage, a carrier arranged thereon and extending lengthwise thereof, asupporting element for the carrier, said element having one end pivoted with the upper end of the carriage and its other end pivoted with the lower end of the carrier, and means on said carrier to provide for sidewise dumping therefrom.

3. An apparatus for the purpose set forth comprising an upwardly traveling carriage, a carrier arranged thereon and extending lengthwise thereof, a supporting element for the carrier, said element having one end pivoted with the upperend of the carriage and its other end pivoted with thelowerend of the carrier, and means on said carrier to provide for sidewise dumping from. either side thereof. r V r 4. An apparatus forthe purpose set forth comprising a supporting frame provided with trackways, a tiltable carriage traveling in said trackways and provided with a supporting carrier bodily tilting therewith and further including a shaft intermediate the lit) ends thereof, means connected to said shaft forconveying the carriage to tilting position, and meansshiftably mounted on said frame and having its upper end engaged by said shaft for discontinuing the conveying of thecarriage when the carriage reaches tilting position. 7 V

5. An apparatus for the purpose set forth, a normally inclined supporting frame provided with trackways, a portable base therefor to which said frame is pivoted, an extensible supporting device pivotally mounted on the base and connected to the frame for supporting it and providing means to adjust the frame at various inclinations with respect to the base, and a tiltable carriage traveling in said trackways.

6. An apparatus for the purpose set forth comprising a supporting frame provided with trackways and including a shaft arranged intermediate the ends thereof, a carriage traveling on said trackways, means connected to the shaft for conveying the carriage to one end of the frame and means on said frame and operated by the shaft for discontinuing the conveying of the carriage when the carriage moves over the said end of the frame.

7. An apparatus for the purpose set forth comprising an upright supporting frame provided with trackways, a carriage traveling on said trackways, means for conveying the carriage, a supporting carrier on said carriage and having means to provide for sidewise dumping, and selective trip devices carried by said frame for actuating said means for sidewise dumping.

8. An apparatus for the purpose set forth comprising a supporting frame provided with trackways, a carriage traveling on said trackways, means for conveying the carriage to one end of the frame, and adjustable means extending lengthwise of said frame and operated by the carriage for discontinuing the conveying thereof when the carriage arrives at said end of the frame.

9. An apparatus for the purpose set forth. comprising an upwardly movable travelling carriage, a carrier arranged thereon and extending lengthwise thereof, a supporting element for the carrier, said element having one end pivoted with the upper end of the carriage and its other end pivoted to the lower end of the carrier thereby providing for the swinging of the latter on the supporting element for the reception of the load, and said carrier provided with trip actuated means to cause sidewise dumping therefrom.

10. An apparatus for the purpose set forth comprising an upwardly movable travelling carriage, a carrier arranged thereon and extending lengthwise thereof, a supporting element for t e carrier, said element having one end pivoted with the upper end of the carriage and its other end pivoted to the lower end of the carrier thereby providing for the swinging of the latter on the supporting element for the reception of the load, and an inclined supporting frame provided with trackways for said carriage, means connected with the carriage for elevating it on said trackways, and means at the upper end of the frame and forming a continuation of the trackways for tilting the carriage to discharge the load from the carrier.

11. An apparatus for the purpose set forth comprising an inclined supporting frame provided with trackways, a tiltable carriage travelling on said trackways, a load carrier arranged on the carriage and extending lengthwise thereof, a supporting element for the carrier, said element having one end pivoted with one end of the carriage and its other end pivoted with an end of the carrier opposite the end to which the element is pivoted to the carriage, circular grooved extensions arranged at the upper end of the frame and forming a continuation of said trackways and providing means for tilting the carriage for discharging the load from the carrier.

12. An apparatus for the purpose set forth. comprising an inclined supporting frame provided with trackways, a tiltable carriage travelling on said trackways, a load carrier arranged on the carriage and eX- tending lengthwise thereof, a supporting element for the carrier, said element having one end pivoted with one end of the can riage and its other end pivoted with an end of the carrier opposite the end to which the element is pivoted to the carriage, circular grooved extensions arranged at the upper end of the frame and forming a continuation of said trackways and providing means for tilting the carriage for discharging the load from the carrier, means for conveying the carriage upwardly on said frame, means slidably mounted on the frame and extending lengthwise thereof and operated by the carriage when the latter arrives at the upper end of the frame, causing thereby the discontinuing of the conveying of the carriage.

In testimony whereof, I affix my signature hereto.

SAMUEL P. ERWIN.

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