US1308750A

US1308750A - barrett

Info

Publication number: US1308750A
Authority: US
Publication date: 1919-07-08
Anticipated expiration: 1936-07-08

Description

A. M. BARRETT.

TRUCK. APPLICATION FILED JAN-21.1916- Patented July 8 3 SHEETSSHEET I.

A. M. BARRETT.

TRUCK.

APPLICATION FILED JAN-21.1916.

Patented July 8, 1919.'

3 SHEETS-SHEET 2.

MW @W NQ m I? R mmw i Q@ Q\\T A. M. BARRETT TRUCK.

APPLICATION FILED JAN. 21. I916- Patented Jui 8, 1919.

3 SHEETS-SHEET 3.

' p 'rn iox.

if duced cheaply and which shall be as adapt- To all whom it may concern:

' Be it known that I, ARTHUR a citizen of the United States, and a resident UNITED STATESPATENT oFr oE. A

Anrrrun m. BARRETT, or wmnnrxa, rumors.

Specification of Letters Patent.

Patented July 8, 1919.-

Application filed January 21, 1916. Serial No. 73,339. I

M. BARRETT,

of Winnetka, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Trucks, of which the'following is a specification, reference being had to the accompanying drawings.

My invention relates to trucks and particularly to that class of elevating truck adapted tobe used with a-plurality of platforms underany one of which the truck ,is

adapted to be run for lifting the platform' and carrying it to the desired point. It is the principal object of my invention to pro-x vide in a truck of this type a simplified construction and arrangement which can be proable as it can be made to effective use in close quarters. It is another objectof my invention to improve trucks of this type in sundry details hereinafter pointed out." The,

2 preferred means by which I have accomq application is set forth in the plished my objects are illustrated in the ac 'companying drawings and are hereinafter specifically described. That which I bea top view ofthe truck shown but with-the handle shown in the truck withthe elevating frame in -raised position, showing a changed position of the handle; Fig. 6 is a vertical cross-section on' line 66 of Fig. 5;

Fig. 7 is a vertical cross-section taken on line 7-7 of Fig. 5';-

Fig.8 is a, detail view of the front axle member: Y 1 I Fig, 9 is a longitudinal vertical section taken substantially at the line 99 of Fig. I 2 but with the elevating frame in raised phsition; 4 Fig. 10 is a longitudinal vertical section. taken substantially at the line 10-10 of said side-bars.

I Fig. 2, but with the elevating frame in raised position; .and Fig. 11 is a detail view, being substantiallya vertical section taken on line 11-11 Re erring to the several figures of the drawmgs in WhICh COIIGSpOIIdlIIg parts are indicated by the same reference characters,--

. 20 indicates a cross-head or bolster comprismg the front member of the supporting frame of the truck, having secured to it side-bars 21-22 (see Figs. 4 and 7) The side-bars 21-22 are connected by a shaf t 23 at their rear ends upon which are mounted supporting wheels 24-25. Q

'- The cross-head 20 comprises a vertical sleeve 26, as is best shown in Fig. 7, in which is journaled the king-bolt portion 27 of the front axle member 28. Mounted in' the axle member 28 is a shaft or axle-29,-

mounted upon which are .two supporting wheels 30-31. The king-bolt 27 is retained in the bearing sleeve 26 by means' of a flanged plate 32 which extends'dotvn into the sleeve 26, being securedto the kin'g bolt 27 by any suitable means, as by bolts 33-a's' shown in Fig. 11. In the construction shown, the king-bolt 27 is provided with notches 34 into which lugs 35 carried by the plate 32 ex tend for strengthening the connection of the plate 32 and the kingbo1t27.

36 indicates the front cross-bar of an ele-' vating frame which is movable up and down relative to the supporting frame 22,01 the truck. The elevating frame comprises sidebars 37- 38 secured at their front ends to the cross-bar 36, being secured together at their rear ends by a rod 39 (see Fig. 2).

' Links 40-41 having their lower ends mount ed on the shaft 23 are mounted at their up# I ends upon a cross-rod 42 mounted in side-bars 37--38 near the rear ends of Additional links 43-44 connectthe rod 42 with the. shaft 23, serving 'to reinforce 'the links 40--41. Aswill 'be per the readily understood, when the elevating frame is drawn forward relative to the supporting frame, the rear ends of the side-bars 37'-38 will be raised out of contact with the sidebars 21 -22 through the action of' the link connections between the supporting frame and the elevating frame.

Meansis provided, as hereinafter described, for simultaneously drawing the elevating frame forward and raising its front end. In order to provide for aproper de scent of .thefront end of the elevating frame relative to the supporting frame independently of the raising means, I have provided diagonally disposed slide blocks. In the constructlon shown (see Fig. 10), a chamfered extension45 depending from the cross bar 36 at each side coiiperates with a chamfered rearward extension 16 carried by the cross-head 20. In order toease the descent of the elevating. frame as the extension a5 head 50 is movably secured to the yoke 51 and the cross-bar 52 by meansof cap-screws 53 extending through flaring openings 5 L provided in said yoke and said cross-bar.

diagonal slide-blocks for holding the elevat- Means is provided inconnection with the ing frame in its raised position comprisin a hook 55 secured to the cross-head adapted to be automatically engaged by a.

' foot-latch 56 which is pivotally mounted upon the cross-bar 36in position tobe readilyoperated by the foot of the operator for releasing it from the hook 55. A spring 57 serves to hold the foot-latch 56 turned to the limit of its movement in clockwise direction in Fig. 9, as limited by suitable stops of any appropriate type.

By my construction I have provided for raising the front end of the elevating frame and moving it forward relative to the supporting frame by the use of the handle by which the front supporting wheels are turned about the king-bolt. 1 In the construction illustrated thisis accomplished by a di rect engagement of the handle with the elevatingframe. In order to accomplish this *result without materially lessening the adaptability of the truck for use in close quarters, I have mounted the handle upon a movable fulcrum- With the pivot point of the handle in its u permost and rearmost position, it is'adapte to be used for elevat ing purposes; whenmoved downward and forward the handle is adapted to clear the elevating frame so as to permit free swivel ing of the front wheels upon. the king bolt.

The plate 32 which serves to hold the king-bolt 27 within the bearing sleeve 26 is provided with lugs 58 extending upward therefrom. Each of these lu s is provided with a diagonally-extending s 0t 59, the said two slots 59serving to movably support a pivot pm 60 mounted in the handle 61. The

handle 61 is turned at its lower end substantially at right angles to the major portion of its length, being provided with a notch 62 a short distance to one side of the'pivot pin 60. With the elevating frame in its lowered position, and with the pin 60 of the handle 61 moved to its uppermost and rearmost position, the notch 60 is adapted to be brought, by a slight movementof the handle in clockwise direction in Fig. 1, into engagement with the elevating frame, a pin 63 being provided to' furnish a bearing for the handle on such frame. Upon the further movement of the handle in clockwise direction inFig. 1, the front end of the elevating frame will be moved upward and forward,

as shown by a comparison of Figs. 1 and 3,

the real. end of the elevating-frame being at the same time raised through thaaction of the links by which it is connected with .the supporting frame. In the construction shown, a-bracket 64 formed integrally with the cross-bar 36 is provided for supporting the bearing pin 63 of the elevating frame, the bracket being bifurcated at its upper end to lprovide spaced supports for said pin.

s is shown In Fig. 5, the turned end of the handle 61, when the pin 60 is in its lowcred forward position, and with the elevating frame in 1ts raised position, is adapted to clear the elevating frame so as to permit the handle to be turned vertically from hori- 'zontal position to vertical position, and to be turned horizontally 'entlrely about .the king-bolt except as 'such turning is limitedby the engagement of the longer arm' of -the handle with the elevating frame. As will be appreciated froman inspection of Fig. 1,

is attained with the elevating frame in its lowered position and with the pin 60 in its,

lowered forward position. I elevating frame either-raised or lowered the supportlng. wheels 30-31 are free to be turned as desired relative to the vertical bearing sleeve 26 for the king-bolt 27, where- Thus with the the same freedom of movement of the handle by the truck can be readily manipulated in close quarters as may be required.

I have found from practice that when the pin 60 is pushed to the upper ends of the slots 59 and pressure is applied to the handle to give it an operative stroke for raising the elevating frame, such an operative;

stroke caneasily be efl'ected'without danger ofthe pin 60 movingv downward alongsaid slots. In this operation, in the construction illustrated, the slide-block 45 is lifted out of contact with the slide-block 46, such slideblocks being brought into effective operation only to assist the hook 55 and the latch lever 56 holding the elevating frame in raised position and subsequently in the lowering of the el'evatingframe relative to the sup-.

porting frame.

By reason of the foot-latch 56. being accordingly.

hookf55 also tendsto move the elevating frame downward. Moreover if it is desired, the attendant can, after releasmg the foot-lever 56, without changing his position apply the required pressure for causing the downward movement of the elevating frame. This is important, inasmuch as the weight 'of the elevating frame, as it is desirable to' make it, is barely suflicient to cause such frame to descend against the resistance of the construction shown, I have provided a spring 47* for assisting in the downward movement of the elevating frame, as'will be readily'appreciated. 1

So far as I am aware, I am the first in the art to provide a movable fulcrum for a truck handle by which the handle may be utilized for raising' the elevating frame without materially decreasing the" adaptability of the truck .for its desired move ments, and, my claims areto be construed What-I claim as my invention and desire to secure by Letters Patent, is'

4 i ,1. In a truck, the combination of a main frame, a supportingwheel journaled upon a horizontal axis and adapted to turn about H, a vertical. axis relatively ,to said frame, a handle operatively connected with said supporting wheel'for guiding the truck, an up w'ardly-movable elevatingframe mounted on said main frame, and means rigidly carfried by said handle and'movable therewith :Qinto and out of position to directly engage said'elevating frame for lifting the same. 40

2. truck comprising a main frame, a steering wheel connected therewith, a handle connected with said steering wh'eel for guid ing the same, said handle. being -pi voted to swing in a vertical plane,an elevating frame mounted on said main frame and movable up and down relatively thereto, and meansv rigidly caa'ried by said handle and adapted to'directly, engage and lift said elevating frame when said handleis swung downwardly.

3. In a truck, the combination of a frame, a ,lever ,operatively connected with said i 1 frame and adapted to swing relative therefirst-named frame, said lever being adapted to in either of two positions thereon, and an elevating frame movable relative to said to swing in one position upon its connections independently of the elevating'frame and adapted' alternatively by swing ng in the other position upon its connections to directly engage said elevating frame for raising it relative to said first-named frame. 4. In a truck, the comblnatlon of a frame, an elevating-frame movable up and down 66 relative to said first-named frame, and. a

a ing adapted to'be given a swinging move as an axis when the fulcrum is in another on a fulcrum which is movable relative to; said first-named frame independently of any lateral swinging of the lever, said lever be- 70 ment about its fulcrum as an axis independently of said elevating frame when the fulcrum is in one position, and being adapted by a swinging movement about its fulcrum position to have direct engagement underneath a portion of said elevating frame for raising said frame relative to said firstnamed frame.

5. In a truck, the combination of a frame, an elevating-frame movable up and down relative to said first-named frame, and a lever vmounted on a fulcrum movable upposition and being adapted by an operative stroke with the fulcrum in its upper rear- -most' position" to have direct engagement with said elevating-frame for moving said frame upward relative to the first-named frame.

6. In a truck, the combination of a frame, a front axle-member revolubly mounted on a vertical axis upon said frame, supporting means for said front axle-member comprising a supporting wheel journaled thereon on a horizontal axis, an elevating frame movable up and down relative to said firstnamed frame, and a handle connected with said axle-member for turning it for guiding the truck, the connections between said axlememberand said handle comprising a slot 105 in said axle-member, and a pin carried by said handle and adjustable to either of two operative positions along said slot, said handle being adapted to swing without contacting with the said first-named frame when the pin is in one of its said two positions and being adapted by an operative stroke with the pin in its other operative position to directly engagesaid elevatingframe and to move said frame upward relative to thefirst-named frame.

7. In a truck, the combination of a frame, a front axle-member revolubly mounted on a vertical axis upon said frame, supporting means for said front axle-member comprising a supporting wheel journalcd thereon on a horizontal axis, an elevatingframe movable up and down relative to said firstnamed frame, and a handle connected with said axle-member for turning it for guiding the truck, the connections between said axle -member and said handleicomprising aslot in said axle-member extending diagonally upward and backward, and a pin carried by said handle and movable along said slot,

said handle being adapted to swing without contacting with the elevating-frame when the pin is in the lower forward end of said slot and being adapted by an operative stroke with the pin in the upper rearward end of said slot to have direct detachable engagement with said elevating-frame for moving said frame upward relative to the first-named frame.

8. In a truck, the combination of a frame, a supporting wheel, a king-bolt connecting said supporting wheel with said frame, a handle operatively connected with said kingbolt for turning said supporting wheel about the king-bolt as an axis for guiding the truck and also adapted to swing vertically, and an elevating frame movable relative to said first-named frame, the connections between said king-bolt and said handle comprising a bracket carried by said king-bolt and provided with an obliquely-extending slot, and a pivot pin mounted in the handle and movable longitudinally of said-slot,whereby said handle is adapted in its lowered forward positioii in said slot to swing independ ently of the elevating frame and is adapted by astroke in its rearward uppermost position in said slot to engage said elevating frame for raising it relative to said first- 30 named frame.

9. In a truck, the combination of a frame, a supporting wheel journaled upon a horizontal axis and adapted to turn upon a vertical axis relative to said frame, a handle operatively connected with said supporting Wheel for turning it about said vertical axis for guiding the truck and also adapted to swing vertically, and an elevating frame movable relative to said first-named frame, the connection between said supporting wheel and said handle being adjustable whereby the handle is adapted to be operated in either of two positions, said handle being adapted in one position to swing independently of said elevating frame and adapted by a stroke in the other position to effect a detachable engagement with a rigid portion of the elevating frame for raising said elevating frame relative to said firstnamed frame. I

10. A truck comprising a main frame, a steering wheel connected therewith, a handle connected with said steering wheel for guiding the same, said handle being pivoted to swing in a vertical plane, an elevatin frame mounted on said main frame an movable up and down relatively thereto, and means rigidly carried by said handle and adapted to directly engage and lift said elevating frame when said handle is swung downwardly, said handle being mov able into and out of operative relation with said elevating frame.

11. In a truck, the combination of a frame,

a supporting wheel, a king-bolt connecting handle in the form of a bell crank lever pivotally mounted at its angle on a horizontal axis on said king-bolt for turning said supporting wheel about the king-bolt as an axis for guiding the truck, and an elevating frame movable relative to said first-named. frame, the connections between said lever and said king-bolt comprising a pivot pin and slot along which the pivot pin is movable, whereby the short arm of the lever is adapted to swing independently of the elevating frame in one position of the lever relative to the slot, andwhereby said short arm of the lever is adapted by a stroke in the other position of the lever relative to the slot to detachably engage said elevating frame for raising it relative to said first-named frame.

12. In a truck, the combination of a frame, supporting wheels mounted thereon, a lever operatively connected with said frame and adapted to swing vertically relative thereto, and an elevatingframe movable relative to said first-named frame, the connections between said lever and said first-named frame being movable relative'to said first-named frame whereby the said lever is adapted to swing in one position independently of the elevating frame and is adapted by a stroke in its other position to detachably engage said elevating frame for raising it relative to said first-named frame, such engagement of the lever with the elevating frame serving to prevent the lever from moving outof its operative elevating position.

18. In a truck, he combination of a frame, supporting wheels mounted thereon, a lever operatively connected with said frame and adapted to swing vertically relative thereto, and an elevating frame movable relative to said first-named frame, the connections between said lever and said first-named frame being movable relative to said first-named frame whereby the said lever is adapted to swing in one position independently of the elevating frame and is adapted by a stroke in its other position to detachably engage said elevating frame for raising it relative to said first-named frame, said lever being provided with a suitable notch adapted to be brought into engagement with the elevating frame serving to prevent the lever from moving during the raising" operation out of its effective elevating position.

14. In a truck, the combinationof a frame, an elevating frame movable relative thereto, elevating links pivotally connecting the rear endsof said frames, obliquely-disposed slideblocks mounted on said frames near their forward ends adapted to cooperate for supporting the forward end of the elevating frame during the lowering operation, and means cooperating with said links for raising said elevating frame relative to said first-named frame and serving during the raising operation to move said slide-blocks out of operative engagement with each other.

15. In a truck, the combination of a frame, an elevating frame, means connecting the rear end portions of said frames adapted upon movement of one frame longitudinally relative to the other to raise or lower the rear end of said elevating frame relative to said first named frame, supporting means carried by the forward end portions of said frames respectively adapted to hold the forward end of said elevating frame in raised position when said frames are held against longitudinal movement relative to each other after a raising operation, and a lever operatively connected with one of said frames near its forward end adapted by itself by an operative stroke in engagement with the other frame to raise the forward end of the elevating frame without the aid of said supporting means and at the same time to move one of said frames longitudinally relative to the other for raisin the rear end of the elevating frame relative to the other frame.

16. A truck comprising a main frame, a steering wheel connected therewith, an elevating frame movably mounted on said main frame, a handle connected with said steering wheel for guiding the same, and means carried by said handle and adapted to operatively engage said elevating frame to lift the same when said handleis swung in one direction, the pivot of said handle being shiftable to move said handle into and out of operative relation to said elevating frame.

17. A truck comprising a main frame, a

steering wheel connected therewith, an elevating frame mounted on said main frame to move forward and upward relatively thereto, a handle connected with said steering wheel for guiding the same, said handle being pivoted to swing in a vertical plane and the pivot of said handle being shiftable toward and from said elevating frame, and means rigidly carried by said handle and adapted to engage and lift said elevating frame when said handle is moved into operative relation to said elevating frame.

18. A truck comprising a main frame, a steering wheel connected therewith, an elevating frame mounted on said main frame to move forward and upward relatively thereto, a handle connected with said steering wheel for guiding the same, said handle being pivoted to swing in a vertical plane and the pivot of said handle being shiftable toward and from said elevating frame, and

means rigidly carried by said handle and adapted to directly engage and lift said elevating frame when said handle is moved into operative relation to said elevating frame.

19. A truck comprising a main frame, a steering wheel connected therewith, a handle connected with said steering wheel for guiding the same, said handle being pivoted to swing in a vertical plane, an elevating frame mounted on said main frame to simultaneously move forward and upward relatively thereto, and means rigidly carried by said handle and adapted to engage and lift said elevating frame when said handle is swung downwardly.

ARTHUR M. BARRETT.