US1295698A - Elevating-truck, transporter, or the like. - Google Patents

Description

A. COLLlS.

ELEVATING TRUCK, TRANSPORTER, on THE LIKE. APP UCA HON HLED NOV- 7. 918- 1,95fi98. Patented Feb. 2-5, 1919.

5 SHEETS-$HEET.I-

A. COLLIS.

ELEVATING TRucK, TRANSPORTER, OR THE LIKE.

APPLICATION FILED NOV. 7. ISIS.

5 SHEETS-SHEET 2.

Patented Feb. 25, 1919.

A. COLLIS. ELEVATING TRUCK,.TRA-.NSPORTER, OR THE LIKE.

APPLICATION FILED NOV. 7. 1918.

1,295,698. Patented Feb. 25, 1-919.

5 SHEETS-SHEET 3- A. COLLIS.

ELEVATING TRUEK, TRANSPORTER, OR THE LIKE.

' APPLICATION FILED NOV. 7. 1918.

1,295,698. Patented Feb, 25, 1919.

5 SHEETS-SHEET 5.

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ALFRED COLLIS, OF LONDON, ENGLAND.

ELEVATING-TRUCK, TRANSPORTER, OR THE LIKE.

To all it may concern:

Be it known that I, ALFRED CoLLIs, a subject of the King of Great Britain, residing at London, England, have invented certain new and useful Improvements in Elevating- Trucks, Transporters, or the like', of which the following is a specification;

The object-of this invention 'is to construct an elevating platform, truck,'transporter or the like with jacks or similar lifting appliances actuated by a movement of the steering or a movable handle and the invention consists essentially 'of the combination of a frame carrying wheels, an elevating platform, jacks or similar lifting ap pliances connecting the frame orsome part thereof or the wheel axles with the elevating latform, means connecting the. jacks or simi ar lifting appliances with the steering or movable handle for actuating the jacks for lifting or lifting front the following description aided by the annexed drawings in which Figure l'is a side elevati like.

tions of a jack carrier or frame and part of the platfom and showing the jack and platform in four positions from lowest to highest. Fig. 7 i is a sectional plan of the frame car 11 a 3ack and itsoperating' mecha ryl g -a cross bar 29'and are controlled in their A frame 1 a correspondin number of lifting jacks which willlbe' ereinafter more fully explained, there bein two frames, and four jacks on each side 0 the frame 1.

An elevating platform 6 is mounted over a bell crank lever 9 journaled to the frame I Specification of Letters Patent. Application filed November 7, 1918. Serial N0. 261,548.

' completed;

.and lowering -and" maintaining inpositlon the elevating plat form, and means for reversing the move! ment of the platform at the end .ofeach' raising or lowering operationbya-con tinuous movement of the operating handle. a

The invention will be clearly understood on andFig. 2' a. plan of acomplete truck, transporter orthe 4 K f -uyThetwo hell I Figs; 3; 1,6 and 6 are sectional-elevak fnected' by arod 25, both rods, being exor lifting appliance and itsis' mounted'on wheels 2, .2,"- which are'; in a fixed position, and also on. one'or two steering wheels 3 located at the, front of the improved device. The frame. 1 is alsoprovidedwith and 1 has securedj thereto four vertical frames 4 for receiving fit the vertical frames v H .spring mechanism is 'constructedwlth.

Patented Feb. 25, 1919.

4 on. an axle 10, the latter also carrying a springcontrolled pawl 11 the nose of which engages theteeth 8 of the adjacent depending post 7. To the lower arm 12 of the bell crank 9 I pivot a second pawl 13 which also-\engages the teeth 8 of the depending post7; On the axle l0 carryingthe spring controlled pawl 11 is arocking lever 14 one end of which is engaged by pin15 actuated by asprin 16; the other end of the'lever 14 is provi ed with a recess 17 and sloping edges '18, 18. r

The end of the lever 14: acted upon by the spring controlled. pin 15 is made somewhat W shape and the pin 15 acts against this end so that when the lever 14 is swung on the axle 10 it will beheld in either oftwo positions in whichit isplaced and its movement I provide on the platform 6 for each jack mechanism .a depending post 19 having two lugs 20, 21 or. equivalent means which engage apin 22 on the rocking lever 14to actuate.

the said lever just before'the end of either raising or lowering operation of the platform. 1

The sloping portion- 18" on the end. of the lever 14 engages a pin-.23 0n the pawl 11 and the recess 17 engages a, pin 24 on the other pawl 13 connected'to the bell crank 1ever9.

cranks'on each side are contended toward the steering post 26 and positioned in-proximity tofthe handle 27 and in The rods 25 are connected at one end by v:with the platform in any position. 1

Assuming the platform to be lowered and the parts inthe position shown in F1g. 3

the handle 27 is raised and 'in so doing the jaws 28 will engage the ends 31 of the rods 25 and thereby actuate the bell cran s 9 and lift the push the rods lon tudinally and awls 13 one tooth, the other pawls 11 riding into the .teeth below the one they have engaged to hold the racks, see Fig. 4, the movement of the rods 25 putting tension on the '30. 0n a-reverse movement of the handle the sprin 30 will bring the rods 25 .;line with fixed jaws28 thereon, the steering 4 and pulling handle being pivoted to theaxle 32 of thesteerin'gwheel 3. 1 g

back and also the ell crank levers 9 for their pawls 13 to engage the next lower tooth in the racks 7 and by a continued reciprocating movement of the handle the jackswill be lifted and when the platform 6 has been raised the desired height the bottom lugs 21 on the depending posts 19 will have engaged the pins 22 of the rocking levers 14 on the bell crank axles 10 and moved them over and as soon as the pins 15 have passed the highest point 33 the springs 16 will act upon the pins 15 and cause them to move the rocking levers 14 over by engaging the sloping portion until the endis nearly reached and the sloping portions 18 come against the pins 23 on the pawls 11, the weight of the platform 6 and load holding the pawls 11 in engagement with the racks 7 against the pressure of the springs 16 on the pins 15 see Fig. 5, and the recesses 17 in the levers 14 will engage the pins 24 on the pawls 13 pivoted to the bell crank levers, the platform being held by the pawls 11 in the raised position.

To lower the platform the handle is pushed fully back and its jaws or yoke will engage the ends of the distancing rods and move the bell crank levers ov'era'nd the pawls 13 being free from the recess 17 will by the action of their springs engage a tooth and slightly lift the racks 7 releasing the pressure of the platform andload on the pawls 11 and allow the pins 15 as complete their movement to the end of the slope 33 of the rocking lever 14 and thus to move these levers 14, and the sloping surfaces 18 engaging the pins 23 will then move the pawls 11 away from their teeth, the springs 16 on the pins 15 being stronger and will overcome the tension of the springs of the pawls 11 and allow the platform to be lowered by the pawls 13. When the platform is lowered one tooth the pins 24 on the pawls 13 will come against the sloping portions 18 of the rocking" levers 14 and press same downward and be forced along same into the recesses 17 and out of engagement-with their teeth in the racks 7 at the same time owing to the noses of the rocking levers 14 being pressed downward the sloping surfaces 18 will be moved away from the pins 23 on the pawls 11 and allow the pawls 11 under action of their springs to engage with teeth in the racks 7 and hold same for a repeat operation of the pawls 13 and by a continued reciprocal movement of the handle the platform will be lowered and just as the lowering is reaching its limit other stops 20 on the posts will push the rocking levers over and the spring pins 15 will pass over the" point 33 and act on the other slope and will place them in the opposite position and clear I of the pawls, the platform resting on the two pawls see Fig. 7 or on the frame.

The rods 25 between the jacks mechanism are positioned to insure that all pawls move the said frame, ack mechanism arranged in pairs at opposite sides of the frame and each provided with a toothed' post, the jack mechanism connecting the frame and the platform, bell crank levers carrying pawls operative to raise and check the movement of the posts, a longitudinally shiftable rod connected to the jack mechanism on each side of the frame through the bell crank levers, rook levers closely associated with the bell crank levers for releasing the pawls relatively to the posts, holding means engaging the said rock levers, a handle mounted at the forward portion of the truck and having devices for engaging the forward ends of the rods for actuating the jacks and causing the platform to rise and lower, and means extending downwardly from the platform for operating the rock levers to cause the latter to perform their function.

2. An elevating truck of the class specified I comprising a frame having wheels, a part of the wheels being used as steerlng means therefor, a rising and lowering platform on the said frame, jack mechanism arranged inpairs at opposite sides of the frame and; each provided with a toothed post, the jack mechanism connectin the frame and the platform, bell crank levers carrying pawls operative to raise and check the movement of the posts, a longitudinally shiftable rod connected to the jack mechanism on each side of the frame through the bell crank levers, rock levers closely associated with the bell crank levers for releasing the pawls relatively to the posts, holding means engaging the said rock levers, a handle mounted at the forward portion of the truck and having devices for engaging the forward ends of the rods for actuating the jacks and causingthe platform to rise and lower, the rock levers ALFRED ooLLIs.

Witnesses:

P. E. MA'rrocKs, H. MAYKELS.

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