US1463302A - Car unloader - Google Patents

Description

July 31, 1923. 1,463,302

- F. E. TOWNSEND CAR UNLOADER Filed Nov. 29, 1920 4 Sheets-Sheet 1 July 31, 1923.

' 1,463.302 F. E. TOWNSEND CAR UNLOADER 4 Sheets-Sheet 2 Filed Nov. 29 1920 %mif July 31, 1923 FL E. TOWNSEND CAR UNLOADER 4 Sheets-Sheet 5 NEY.

INVENTOR. FEYZa/IzYen ATT Filed Nov. 29

July 31, 1923.

1 1,463,362 F. E. TOWNSEND CAR UNLOADER Filed Nov. 29, 1920 4 Sheets-Sheet '4 Q 4 l INVENTOR.

F E7Zwnfend Jig? Patented July 31,1923.

. ire ST as 4 1,463,302 PATENT-or fice.

' FLOYD E. 'rownsnnnor BERKELEY, CALIFORNIA, AssIGNon or. O E-HALF r0 n. G.

PALMER, or sale FRANCISCO, ol' LiroanIA.

can UNLOADER.

Application filed November 29,1920. Serial No. 426,913.

To all whom it may concern:

Be it known that I, FLOYD E. TOWNSEND, citizen of the United States, residing at Berkeley, in the county of Alameda, State of California, have invented'a newand useful i Car Unloader, of which the following is a specification in such full and clear terms as will enable those skilled in the art'to construct and use the same.

This invention relates to a car unloader and its object is to produce a machine which is capable of swinging an elevator leg trans versely from side to side ofthe car and also being capable of moving the elevator leg longitudinally of the car'a suflicient amount to unload a good portion of the car without moving the car or the elevator supporting apparatus. v

A further object of the invention is to provide an unloading apparatus which will be as low as possible in order to enable it to be admitted to docks and railway stations where low doors must often be passed through.

Another object of theinvention is to re;

.duce the total height of thecomplete apparatus in operation as much as is consistent with the elevation of the materials handled, to a discharge chute, to a bin or to a truck body. I

Another object of the invention is to provide the apparatus with a control mechanism which will all belocated conveniently adj acent theposition of the operator, his platform being placed high enough for him to observe the operation of the elevator at all times. c Other} objects of the invention as the description proceeds.

An embodimentof the invention is shown in the accompanying drawings in which the same reference numeral is applied to] the same portionthroughout, but I'amJaware that there may be modifications :thereof.

Figure 1 is a side elevation of the complete machine. i

will appear .plete machinelo'oking from the left Fig. 1'.

Fig. 3 is. a plan View of the complete machine. 5 g f r i Fig. 4 is an enlarged View of the elevator leg swinging mechanism.

- Fig. 5 is an enlarged frame tilting mechanism. w

turn table gear. V

Fig. 7 is a plan View of the square shaft Fig. 2 is"a;v1ew;in elevationtof the com- Fig. 6 is a plan View of the portion ofthe used for driving the elevator chains.

The apparatus comprises a suitable truck body 1 mounted on four wheels 2 to 5 inclusive in order that'the truck may be transported from place to place readily. The truck body carries a'pair of cross beams 9 and 10 which support a platform 11 on the outer edge of which is a ring gear, 12.

The platform 11 supports a pluralityfiof roller bearings 13, which bearings in turntouch' a circular track 14 onthe under side of the platform 15.

Brackets 16 and 17 placed wherever needed are secured to the under side of the platform 15 and serve to holdthe platform from tipthereon... I 1

The platform 15 has a king pin 18 which ping over, in case an undue strain is placed I 15 there are upwardly extending brackets 19 and 20 which pivotally support two double posts 21 and 22.. These posts have suitable bearings at their upper ends for a heavy tion by means of two braces 24, 25,'said braces being connected to the outer ends of shaft 23 and they are held in an upright posithe posts 21 and 22 and to brackets 26 and-27 projecting upwardly from the back end of the platform 15.

The shaft '23 supports two heavy arms29, I

30, and said arms have two shafts 31, 32 at their ends. The two shafts 31 and .32 and the arms 29 and 30 connect therewith forminga tilting frame for the support of the elevator. This frame is tilted by a screw 33 which passes through a pivotally mounted nut 34 on the arm 30. This screwis turned by the operation of ahand wheel 35'on ,a

shaft-.36, saidlshaft extending through a worm 4 0. The worm 40 engages a worm wheel 41 onthe screw shaft 33 and said screw thereby.

shaftpasses'through a bracket 42 which allows suflicient' movement of the screw shaft with respect to the shaft 36to permit adjust- 1 ment of thefarms29, 30 and shaftscarried view of the head Mounted above. the shafts 531- and32 a-re. i

'operators platform 56.

two arms 43, 44, said arms each having two bearing blocks through which the shafts 31 and 32 pass.

The arms 43 and 44 are connected with suitable cross members 45,46 and 47 which hold said arms in'a fixed position relatively to each other for the support of the elevator leg 48.

The two arms 43,44 are adjusted longitudinally of their supporting shafts 31 and 32 by means of two screws 49 and 50. These screws are supported I by suitable raised bearing plates 51, 52 carried by the arms 29 and 30. The threadedshafts pass through threaded nuts 53 and 54, carried by the arm 44'and said screws are operated by a hand wheel 55 on the end of the screw 50 over the The operators platform 56 is carried by the post 22 and it hastwo bracing membe'rs57 and 58 to hold it properly in position.

A sprocketlgear 59 onthe'shaft 50 has a chain 60 passing thereover and around a sprocket gear 61 on the shaft 49 so that the frame consisting of the arms 43 and'44 is always moved parallel to the supporting arms 29 and 30.

Mounted in bearings 61' and'62 on the 7 back end of the arms '29, 30 is a square shaft 30- 63, thisshaft passes through collar bearings 64, 65carried by the arms 43,44 respectively and it passes through the center of a sprocket gear 66 which is held in position against the collar 64 by means of a strap 67 "secured to the back end of the arm 43.

Depending from the front end of the two arms 43 and 44 are two suitably braced elevator frames 70, 71 which frames are sup ported from an'aXle 72 on which are two sprocket wheels 73, 74 and-Ia drive sprocket car or digging too deeply into'the pile of material to be handled and'cuttingthe floor ofthe car.

About one-third the distance from the top of the elevator leg'there are two links 84'and 85 which are pivotallyconnected to the elevator leg at 86 and pivotally connected totwo other links 87 and 88 by means of a shaft 89. The shaft 89 is enlarged at its center which will receive a threaded shaft 90. This shaft 90 is supported by a U sh'aped stirrup 91 extending over" the shaft 92. The shaft 92 is in turn supported by the arms 43, 44- and" its end opposite from the hand wheel 93 is supported by a bearing 94 on the arm 29, said bearing alsoaffording means through the collars 95 and 96 for preventing the shaft 92 from moving longitudinally as the arms 43 and 44 are moved longitudinally of the shafts 49, 50. s A bearing 97 supports the wheel end of the shaft 92 when the arms 43, 44 are moved at a distance therefrom. The shaft 92 has a feather-way 'to receive a key 99 carried by the small bevel gear 100, which bevel gear is in mesh with a largerbevel gear 101 on the tip end of the shaft 90.

In order to rotate the platform 15 there is a vertical shaft 105 provided with a small pinionl06 at its lower end and with a hand wheel 107 at its upper end, the hand wheel being in reach of the operator who stands upon the platform 56.

A bearing 108 supports the upper end of the shaft 105 and prevents it from. dropping down." The apparatus is driven from a suitable motor 110 on: the platform 15, said motor having asprocket chain 111 which passes around-the sprocket wheel 112 freely revoluble on the shaft 23.

At theside of the wheel 112 there is a small sprocket wheel 113- which has. a sprocket chain 114 extending around the same and around a sprocket wheel 115 on the squared shaft 63.

It will be observed that whateverposition the elevator leg supports 43, 44 ma be placed, that the sprocket wheel 66 will be carried along with them and will be driven by the squared shaft 63.

Extending over the sprocket wheel 66 is a sprocket chain 116. This chain in turn extends over the sprocket wheel 7 5 at the outer end of the supporting arms 43, 44 and drives the shaft 72, which shaft supports the elevator frame and its associated chains and buckets.

The'operation of the apparatus is as follows: Assuming it to be necessary to move the truck from one place to another place in which the height of the apparatus is too great to permit it to be moved as it appears in Fig. 1, the motor be moved to one side on the platform '15 and the-braces 24, 25 may be disconnected whereupon the supports 21, 22 will be allowed to swing downwardly and rest upon any suitable support on the platform 15. The only requisite being that when the supports are down, that their upper ends shall be'far enough off the ground to prevent the right hand ends of the arms 43, 44 from touching the ground, whereupon the truck may be moved through any ordinary doorway. I

When the truck has reached the place "where its'is-to be operated, the posts 21 and 22 will be raised and the braces 24, 25 will beiapplied as shown in Figs'i-l to 3inclusive. Thereupon the workman mounts the plat-- form 26 and he will raise the elevator leg high enough to pass over the top of the car to be unloaded by the operation ofthe hand Wheel 35. At the same time he can extend or retract the elevator leg as may be necessary by the operation of the hand wheel 93.

s the car is unloaded he will from time to time move the elevator leg lengthwise of the main supportin shaft 23 by the operation of the hand w eel 55, continuin this operation until he has unloaded a space in the car equal to the length of the shafts 49, 50. The car can then be moved and he will either run the arms 43, 44 back to their original position or may move the car a sufficient amount and continue the unloading until they are restored to their initial position, moving them from time to time as he may require.

If it is not intended to run the truck 1 squarely up against the car, or if it is desired to drive it alongside thecar, the body 15 may be rotated to any desired position by the operation of the hand wheel 107. It will of course be apparent that any suitable chute may be used to receive the material dumped from the buckets 81 as they pass over the top of the elevator leg, said chutes forming no part of the present invention.

What I claim is as follows, but various modifications may be made in the construction shown in the drawings and above particularly described form, within the purview of my invention.

1. An apparatu of the character described comprising a truck, supporting posts carried thereby, a tilting frame, arms carried by said frame and movable parallel to its axis,

means for tilting the frame, means for moving said arms, a swinging elevator leg supported by aid arms, an elevator chain carrying buckets passing around said swinging elevator leg, means to adjust the position of the elevator leg and means to operate the elevator buckets independently of the adjusting mechanism.

2. An unloading apparatus comprising a truck, posts thereon, a tilting frame mounted on the posts, means to shift said frame to and hold it in any desired adjustment, 2. second frame mounted for transverse movement along the first frame, screws for effecting the movement of the second frame, an elevator leg upported by one end of the second frame, means to operate the elevator in said leg, and means connecting the second frame and elevator leg for swinging the elevator leg forward or back at will.

3. An unloading apparatus comprising a truck, pivotally mounted I posts thereon, braces for holding the posts erect, a tilting frame on the top of the posts, a screw for tilting and holding said frame in any desired adjustment, a pair of connected arms forming a second frame mounted for transverse movement along the first frame, screws for effecting said movement, an elevator leg carried by the second frame, mean to operate the elevator in said leg, a pair of connected double links for swingingthe elevator leg from said second frame, and a screw connected with said links and with the second frame for swinging the elevator leg backward or forward. v

4. An unloading apparatus comprising a truck, post thereon, a tilting frame mounted on the posts, means to tilt said frame and hold it in any desired adjustment, a second frame mounted for transverse movement on the tilting frame and supported thereby, means for moving said frame back and forth on the tilting frame, an elevator leg supported by the second frame, means to drive the conveyor in the elevator leg from the truck platform, swinging links to move the elevator, an elevated operating platform and 'manual means adjacent the operating platform for the operation of all of the adjustments.

5. An unloading apparatus comprising a truck, a turn table, an elevated operating platform thereon, posts carried by said platform, means adjacent the operating platform for turning the turn table, a tilting v frame carried by said posts, a second frame mounted for transverse movement along the tilting frame, means to move the second frame along the tilting frame, an elevator leg carrying a conveyer supported by the second frame, depending links connected with the elevator leg and with the second frame for swinging the elevator leg and means on the truck for driving the conveyer in the elevator leg.

In testimony whereof I have hereunto set my hand this 22nd dav'of Nov. A. D. 1920.

. FLOYD E. TOWNSEND.

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