CA1088120A - Two-wheeled hand trucks - Google Patents
Two-wheeled hand trucksInfo
- Publication number
- CA1088120A CA1088120A CA329,477A CA329477A CA1088120A CA 1088120 A CA1088120 A CA 1088120A CA 329477 A CA329477 A CA 329477A CA 1088120 A CA1088120 A CA 1088120A
- Authority
- CA
- Canada
- Prior art keywords
- side rails
- nose part
- wheels
- brackets
- rails
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- Handcart (AREA)
Abstract
IMPROVEMENTS IN TWO-WHEELED HAND TRUCKS
ABSTRACT OF THE DISCLOSURE
A two-wheeled hand truck or dolly structure wherein a primary frame is mounted on a pair of wheels and a generally forwardly disposed nose part is con-nected to project forwardly from the primary frame.
The primary frame is made up of side rails connected by cross rails and one of the improvements is concerned with the shape of the side and cross rails which are configured so that they may receive elongate semi-rigid strips bearing information of an advertising or identifying character.
ABSTRACT OF THE DISCLOSURE
A two-wheeled hand truck or dolly structure wherein a primary frame is mounted on a pair of wheels and a generally forwardly disposed nose part is con-nected to project forwardly from the primary frame.
The primary frame is made up of side rails connected by cross rails and one of the improvements is concerned with the shape of the side and cross rails which are configured so that they may receive elongate semi-rigid strips bearing information of an advertising or identifying character.
Description
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This invention relates to two-wheeled hand trucks or dollies of the type wherein a primary ~rame, mounted on a pair of wheels, is adapted in use to assume a generally vertical p~sition and has a generally for-wardly disposed nose part connected to project for-wardly from the primary frame to receive an object to be carried by the hand truck.
Hand trucks of varying design have been pro-posed and patented.
While these prior patents relate to various hand-truck designs none disclose structure capable of carrying elongate in~ormation-bearing semi-rigid strips and indeed none of these prior patents even suggest the concept. Further, it is evident from a study of these priox patents that the hand trucks o the prior art may be improved upon to a significant degree and it is to this end that the inventive principles shown and des-cribed herein are directed.
The hand truck of the present invention includes a primary frame, mounted on a pair of wheels, and adapted in use to assume a generally vertically inclined position.
It has a forwardly projecting nose part which extends rom the lower end of the primary frame and, at its upper end, incorporates a handle which can be grasped by the user to propel the truck. The primary frame consists of an open framework, with side rails connected by cross rail~, and, in one improved form of the invention, the side and ~ross rails are ormed with an exposedl gener-ally T-shaped slot deined by laterally projecting opposed ~0 flan~es. Such slots are provided on the outboard sides of the side rails, and may also be provided on the front sides of the cross rails, to accommodate semi-rigid information-bearing strips.
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As will be apparent from the foregoing, one of the primary objects of the invention is to provide a hand truck which i~ so contructed th~t it will adve~ise the product of the party using the hand truck or identify the hand truck user, as he may desire.
Other improvements are concerned with the axle mounted brackets, which are carried by an axle connecting the wheels, and mount to the lower ends o~ the side rails in an improved manner.
Still other impxovements are concerned with the stair climhers, which are disclosed as attached to the axle-mounted brackets at their lower ends and to the side rails at their upper ends.
A Still fur~her object o~ the inven~ion is to provid2 a very simple, prackical and economical hand truck of improved character which can bè e~ectively utilizea to transport a wide variety of products from one place to ano~her.
Fi~ure 1 is a fron~ elevational view o~ an impr~ed
This invention relates to two-wheeled hand trucks or dollies of the type wherein a primary ~rame, mounted on a pair of wheels, is adapted in use to assume a generally vertical p~sition and has a generally for-wardly disposed nose part connected to project for-wardly from the primary frame to receive an object to be carried by the hand truck.
Hand trucks of varying design have been pro-posed and patented.
While these prior patents relate to various hand-truck designs none disclose structure capable of carrying elongate in~ormation-bearing semi-rigid strips and indeed none of these prior patents even suggest the concept. Further, it is evident from a study of these priox patents that the hand trucks o the prior art may be improved upon to a significant degree and it is to this end that the inventive principles shown and des-cribed herein are directed.
The hand truck of the present invention includes a primary frame, mounted on a pair of wheels, and adapted in use to assume a generally vertically inclined position.
It has a forwardly projecting nose part which extends rom the lower end of the primary frame and, at its upper end, incorporates a handle which can be grasped by the user to propel the truck. The primary frame consists of an open framework, with side rails connected by cross rail~, and, in one improved form of the invention, the side and ~ross rails are ormed with an exposedl gener-ally T-shaped slot deined by laterally projecting opposed ~0 flan~es. Such slots are provided on the outboard sides of the side rails, and may also be provided on the front sides of the cross rails, to accommodate semi-rigid information-bearing strips.
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As will be apparent from the foregoing, one of the primary objects of the invention is to provide a hand truck which i~ so contructed th~t it will adve~ise the product of the party using the hand truck or identify the hand truck user, as he may desire.
Other improvements are concerned with the axle mounted brackets, which are carried by an axle connecting the wheels, and mount to the lower ends o~ the side rails in an improved manner.
Still other impxovements are concerned with the stair climhers, which are disclosed as attached to the axle-mounted brackets at their lower ends and to the side rails at their upper ends.
A Still fur~her object o~ the inven~ion is to provid2 a very simple, prackical and economical hand truck of improved character which can bè e~ectively utilizea to transport a wide variety of products from one place to ano~her.
Fi~ure 1 is a fron~ elevational view o~ an impr~ed
2~ hand truck constructed in accordance with my invention;
` Figure 2 is a side elevational view thereof taken on the line ~-2 of Figure 1, ~he chain lines indicating an alternative position of the stair climber members;
Figure 2A is a side elevational view o the in-formational strip only;
Figure ~B is a transverse sectional view, taken on the line 2B-2B of Figure 2;
Figure 3 is a rear elevational view thereo~;
Figure 4 is a sectional fragmentary elevational view taken on the line 4-4 of Figure 5;
Figure 5 is a considerably enlarged, sectional fragmentary top plan view ta~en on the line 5-5 of Figure 2;
Figllre 6 is a considerably enlargea, fragmentary o top plan view taken on the line 6-6 of Figure 2;
Figure 7 is an enlarged, fragmentary, transverse s~ tional view taken on the line 7-7 of Fiyure l;
Figure 8 is an elevational view of a modified form of strip;
Figure 9 is a still further view of a modified *orm of strip;
Figure 10 is a transverse sectional view showing -the strip of Figure 9 mounted in position, Fi~ure 11 is a side elevational view illusti-ating a modified form of stair climber for the hand truck;
Figure 12 is a transverse sectional view taken on the line 12-12 of Figure 11;
Figure 13 is an end elevational view taken on the line 13-13 of Figure 11;
Figure 14 is a side elevational vie~ of the wear -- strip only; ~
Figure 15 is a transverse sectional view taken at the line 15-15 of Figure 14;
Figure 16 is an end ele~ational view taken at the line 16-16 of Figure 14; and Figure 17 is a top plan ~iew taken at the line 17~17 of Figure 14.
Reerring now more particularly to ~he accompany-ing drawings, and in the first instance to Figures 1 through 7 thereof, t~e hand truck of the presen-t invention is shown as comprising generally a pair of preferably rubber tixed wheels 10, mounted on an axle 11. Brackets 12 have the usual hubs l~a, for receiving the ends of axle 11, and ex-
` Figure 2 is a side elevational view thereof taken on the line ~-2 of Figure 1, ~he chain lines indicating an alternative position of the stair climber members;
Figure 2A is a side elevational view o the in-formational strip only;
Figure ~B is a transverse sectional view, taken on the line 2B-2B of Figure 2;
Figure 3 is a rear elevational view thereo~;
Figure 4 is a sectional fragmentary elevational view taken on the line 4-4 of Figure 5;
Figure 5 is a considerably enlarged, sectional fragmentary top plan view ta~en on the line 5-5 of Figure 2;
Figllre 6 is a considerably enlargea, fragmentary o top plan view taken on the line 6-6 of Figure 2;
Figure 7 is an enlarged, fragmentary, transverse s~ tional view taken on the line 7-7 of Fiyure l;
Figure 8 is an elevational view of a modified form of strip;
Figure 9 is a still further view of a modified *orm of strip;
Figure 10 is a transverse sectional view showing -the strip of Figure 9 mounted in position, Fi~ure 11 is a side elevational view illusti-ating a modified form of stair climber for the hand truck;
Figure 12 is a transverse sectional view taken on the line 12-12 of Figure 11;
Figure 13 is an end elevational view taken on the line 13-13 of Figure 11;
Figure 14 is a side elevational vie~ of the wear -- strip only; ~
Figure 15 is a transverse sectional view taken at the line 15-15 of Figure 14;
Figure 16 is an end ele~ational view taken at the line 16-16 of Figure 14; and Figure 17 is a top plan ~iew taken at the line 17~17 of Figure 14.
Reerring now more particularly to ~he accompany-ing drawings, and in the first instance to Figures 1 through 7 thereof, t~e hand truck of the presen-t invention is shown as comprising generally a pair of preferably rubber tixed wheels 10, mounted on an axle 11. Brackets 12 have the usual hubs l~a, for receiving the ends of axle 11, and ex-
3~ tend forwardly to mount to the lower ends of a primary frame, generally designated 13, which, as shown, comprises an open framework made up of side rail members 14 connected by cross rail members 15. Projecting forwardly from the - .
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primary frame 13 is an angle-shaped nose piece 4enerally designated 16, having a ~orwardly extending lip or apron 16' upon which the article to be transpoIted m~y~b~ 5Up-ported in the usual manner.
As Figure 2 indicates, an alternate hub 12b is also provided on each bracket 12 to accommodate the axle 11 when a wheel 10 of larger diameter is employed. In addition to the members described, U-shaped stair climber members, ~enerally designated 17, are utilized and mount to the brackets 12, and to the side rails 1~, in a manner which w111 be more particularly described later.
It is important to understand that carts of this character must be constructed o light-weight material such as al~ninum, and constructed very economically~ ~c-cordingly, extrusions o the con~guration particularly shown in Figures 5 and 6 are employed as side rails 14. As Figures 5 and 6 indicate, the extruded side rails 14 are generally U-shaped in cross section and include ront and rear sides 14a and l~b respective:Ly, connected by a web part 14c. A bale-shaped handle member 18, which inclines xearwardly as shown particularly in Figure 2, has free ends 18a, which are received in the upper ends of the U-shaped side rails 14, and may be bolted thereto as shown at 19 ~igure 2B).
The outboard ~aces of the web portions 14c o~
each side xail 1~ are provided with ~-shaped slots ~Figure 6), generally designated 20t which include enlarged head portions 20a and reduced size neck portions 20b, defined by projecting flanges ~1 which, like slots 20, extend the ull length of the sicle rails 14. The brackets 12 axe provided with key portions 22 of a depth to be received within the enlarged portions 20a of T-slots 20 and the - slots 20 also accommodate semi-rigid strips 23 which ex-
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primary frame 13 is an angle-shaped nose piece 4enerally designated 16, having a ~orwardly extending lip or apron 16' upon which the article to be transpoIted m~y~b~ 5Up-ported in the usual manner.
As Figure 2 indicates, an alternate hub 12b is also provided on each bracket 12 to accommodate the axle 11 when a wheel 10 of larger diameter is employed. In addition to the members described, U-shaped stair climber members, ~enerally designated 17, are utilized and mount to the brackets 12, and to the side rails 1~, in a manner which w111 be more particularly described later.
It is important to understand that carts of this character must be constructed o light-weight material such as al~ninum, and constructed very economically~ ~c-cordingly, extrusions o the con~guration particularly shown in Figures 5 and 6 are employed as side rails 14. As Figures 5 and 6 indicate, the extruded side rails 14 are generally U-shaped in cross section and include ront and rear sides 14a and l~b respective:Ly, connected by a web part 14c. A bale-shaped handle member 18, which inclines xearwardly as shown particularly in Figure 2, has free ends 18a, which are received in the upper ends of the U-shaped side rails 14, and may be bolted thereto as shown at 19 ~igure 2B).
The outboard ~aces of the web portions 14c o~
each side xail 1~ are provided with ~-shaped slots ~Figure 6), generally designated 20t which include enlarged head portions 20a and reduced size neck portions 20b, defined by projecting flanges ~1 which, like slots 20, extend the ull length of the sicle rails 14. The brackets 12 axe provided with key portions 22 of a depth to be received within the enlarged portions 20a of T-slots 20 and the - slots 20 also accommodate semi-rigid strips 23 which ex-
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tend all the way from the upper ends of rails 14 down into abutting engagement with the upper s~rface of key portions 22, the upper end of key 22 being slotted as at 22a ~o accommodate the lower end of strip 23 and securely affix it in position as shown in Figure 4.
In like manner, and as shown particularly in Figure 7, the extruded tubular cross pieces 15 are proviaed - with T-slots 24 on their front and rear faces which simi~arly comprise enlarged portions 24a and reduced size neck por-tions 24b, defined by overlying flanges 25. Similar semi-rigid strips 26 are accommodated in the portions 24a o slots 24 and extend from one end of each cross rail 15 to the other.
It is to be understood that the strips 23 and 26 are plastic strips of about 1/16" in thickness which are designed to bear advertising material, identifying material, or such other informational material as the user of the cart may desire. Preferably! they are colored strips to contrast with the silver metal].ic color o cross rails 15 and side rails 14, and for purposes of convenience, are ~0 shown in applicant's drawings as carrying printing desi~-nated as "advertising slogan" or "identificationn. The plastic used may be pol~vin~lchloride or any form of a number of known plastic which is suitable ~or the purpose.
~ he nose piece, generally designated 16, includes rear facial portions 16a ~see Figures 1 and 5) which butt against the side rails 14, as shown particularly in Figur~e
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tend all the way from the upper ends of rails 14 down into abutting engagement with the upper s~rface of key portions 22, the upper end of key 22 being slotted as at 22a ~o accommodate the lower end of strip 23 and securely affix it in position as shown in Figure 4.
In like manner, and as shown particularly in Figure 7, the extruded tubular cross pieces 15 are proviaed - with T-slots 24 on their front and rear faces which simi~arly comprise enlarged portions 24a and reduced size neck por-tions 24b, defined by overlying flanges 25. Similar semi-rigid strips 26 are accommodated in the portions 24a o slots 24 and extend from one end of each cross rail 15 to the other.
It is to be understood that the strips 23 and 26 are plastic strips of about 1/16" in thickness which are designed to bear advertising material, identifying material, or such other informational material as the user of the cart may desire. Preferably! they are colored strips to contrast with the silver metal].ic color o cross rails 15 and side rails 14, and for purposes of convenience, are ~0 shown in applicant's drawings as carrying printing desi~-nated as "advertising slogan" or "identificationn. The plastic used may be pol~vin~lchloride or any form of a number of known plastic which is suitable ~or the purpose.
~ he nose piece, generally designated 16, includes rear facial portions 16a ~see Figures 1 and 5) which butt against the side rails 14, as shown particularly in Figur~e
5, and inboard 1ange extensions 16b, which abut fitting strip members 27. Hubs 28 are cast on nose parts 16b and permit ~olts and nuts 29 and 30, respectively to rigidly clamp ~he brackets 12 and nose pieces 16 securely ~o the side rails 14. The bolts 29 extend through the key por-tions 22 of brackets 12 at a point below the strips 23 as shown in Figure 4.
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At their lower ends the stair olimbers 17 are shown as having a pair oE alternate mounting holes 17a and 17b. With the smaller diameter wheels 10 shown, i-t is the holes 17b which are utilized and releasable Eastener members such as bolts 17c are employed to secure the stair climbers securely to the brackets 12. If larger diameter wheels are utilized, then the position o-E stair climbers 17 would be adjusted so that it would be the holes 17a-which would be used for the attaching bolts 17c and secur-ing the stair climber members 17 in the adjusted positionillustrated by the chain lines 17' in Figure 2.
At their upper ends the stair climbers 17 are connected with a pair of inner and outer clip members 31 and 32 ~Figure 6), respectively,~ by way of releasable bolts and nuts 33a and 33b, respectively. Each inboard clip 31 incluaes a U-shaped end 31a, sized to it over the flanged free outer end of the leg part 14b of one of the side rails 14. Similarly, ~he outboard c:Lips 32 ha~e U-shaped ends 32a, configured to ~i~ over the rear flanges 21 on each side rail 14 and bear against the strips 23 as shown in Figure 6. The stair climber member 17, shown in Figure 2, can be moved to the position shown in chàin lines 17', only of course, if the nuts 33b are backed off suEEiciently to permit the clips 31 and 32 to slide upwardly along side rails 14.
The plastic strips 26, carried by cross rails 15, extend the full len~th o rails 15 and may be provided with boxès to recei~e rivets 34 (Figure 7) which secure them in position. They may, however, also be formed as shown in Fi~uxe 8 with elo~gate slots 35. Further, in an alterna-tive form of the invention, an after insertion of narrower strips 26' may be accomplishea with slots 35 similarly accommodatin~ the rivets 34. Preferably, in this embodi-
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At their lower ends the stair olimbers 17 are shown as having a pair oE alternate mounting holes 17a and 17b. With the smaller diameter wheels 10 shown, i-t is the holes 17b which are utilized and releasable Eastener members such as bolts 17c are employed to secure the stair climbers securely to the brackets 12. If larger diameter wheels are utilized, then the position o-E stair climbers 17 would be adjusted so that it would be the holes 17a-which would be used for the attaching bolts 17c and secur-ing the stair climber members 17 in the adjusted positionillustrated by the chain lines 17' in Figure 2.
At their upper ends the stair climbers 17 are connected with a pair of inner and outer clip members 31 and 32 ~Figure 6), respectively,~ by way of releasable bolts and nuts 33a and 33b, respectively. Each inboard clip 31 incluaes a U-shaped end 31a, sized to it over the flanged free outer end of the leg part 14b of one of the side rails 14. Similarly, ~he outboard c:Lips 32 ha~e U-shaped ends 32a, configured to ~i~ over the rear flanges 21 on each side rail 14 and bear against the strips 23 as shown in Figure 6. The stair climber member 17, shown in Figure 2, can be moved to the position shown in chàin lines 17', only of course, if the nuts 33b are backed off suEEiciently to permit the clips 31 and 32 to slide upwardly along side rails 14.
The plastic strips 26, carried by cross rails 15, extend the full len~th o rails 15 and may be provided with boxès to recei~e rivets 34 (Figure 7) which secure them in position. They may, however, also be formed as shown in Fi~uxe 8 with elo~gate slots 35. Further, in an alterna-tive form of the invention, an after insertion of narrower strips 26' may be accomplishea with slots 35 similarly accommodatin~ the rivets 34. Preferably, in this embodi-
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/~ v ment, a strong tacky adhesive will be used on the back of the strips shown in Figure 9 to secure them in position.
In ~igure 11 a stair climber 17 is shown as ` having a wear strip, generally designated 36, applied to its rear edge. For the sake o~ clarity, the wèar strip 36 was not shown in Figures 2 and 3, however it is of the configuration disclosed in Figure 1~, wherein it is shown as having a base or backer section 36a with bent-over pairs of central tabs 37 provided on abbreviated side wall sections 38, and bent-over tabs 39 provided at one end of base section 36a, with bent-over tabs 40 and 41 provided at the other.
Figures 12 and 13 particularly illustrate the manner in which these tabs are bent over rom the 37' position to accommodate to the cross section o~ the stair climber 17 which is par~icularly illustra~ed also in ~hese views.
The operation o~ carts of this character is well known and need not be particularly described. With the embodiment shown in Figures 1 throu~h 8, the strips 23 and 26 are applied during manufacture of the cart to suit the speci~ications of the particular customer b~ slippin~ the strips 23 in the upper ends o~ side rails 14, prior to bolt-ing handle 18 and strips 23 in position, and by slipping strips ~4 into CX05S rails 15 so that the rivet openings therein line up with like openings in the rails 15 prior to riveting the cross rails 15 and strips 24 in position o~
side rails 14. The strips 23 are provided with openings 23' or slots 35 to accommo~ate bolts 19. The strips 26' can, as indicatedr be ater-inserted i~ desired.
The nose piece 16, bracket 12 and side rail 14 connection, particularly illustrated in Figure S, is extremely stout and rigid and it is, of course, ~he con-figuration o these keyed, interitting parts which is responsible. With the new keyed construction, the shear stresses on the clamping bolts are relieved, Moreover, because the brackets 12 are pieces separate from the nose part 16, the nose part can be die cast rather than sand cast and the nose parts 16 can be easily changed where a di~ferent size or configuration is desired. When the user desires to employ a diferent diameter wheel, the position of stair climbers l7 can be adjusted by simply removing theboits 17c while, at the same time, backing off nuts 33b. This is not possible in prior art constrùctions ' ;10 wherein the stair climbers were mounted on the axle. The application of the wear strips 36 is easily accomplished by inserting the wear strip member, shown particularly in .. Figure 14, over the rear edge of each stair clLmber 17, and then bending over the tabs 37 through 41.
It is to be understood that the drawings ànd descriptive matter are in all cases to be interpreted as merely illustrative of the principles of the invention, rather than as limiting the same in any way, since i~ is contemplated that v~rious c~hanges may be made in various ~0 elements to achieve like results without departing from '`the spirit of the invention or the scope of the appended claims.
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/~ v ment, a strong tacky adhesive will be used on the back of the strips shown in Figure 9 to secure them in position.
In ~igure 11 a stair climber 17 is shown as ` having a wear strip, generally designated 36, applied to its rear edge. For the sake o~ clarity, the wèar strip 36 was not shown in Figures 2 and 3, however it is of the configuration disclosed in Figure 1~, wherein it is shown as having a base or backer section 36a with bent-over pairs of central tabs 37 provided on abbreviated side wall sections 38, and bent-over tabs 39 provided at one end of base section 36a, with bent-over tabs 40 and 41 provided at the other.
Figures 12 and 13 particularly illustrate the manner in which these tabs are bent over rom the 37' position to accommodate to the cross section o~ the stair climber 17 which is par~icularly illustra~ed also in ~hese views.
The operation o~ carts of this character is well known and need not be particularly described. With the embodiment shown in Figures 1 throu~h 8, the strips 23 and 26 are applied during manufacture of the cart to suit the speci~ications of the particular customer b~ slippin~ the strips 23 in the upper ends o~ side rails 14, prior to bolt-ing handle 18 and strips 23 in position, and by slipping strips ~4 into CX05S rails 15 so that the rivet openings therein line up with like openings in the rails 15 prior to riveting the cross rails 15 and strips 24 in position o~
side rails 14. The strips 23 are provided with openings 23' or slots 35 to accommo~ate bolts 19. The strips 26' can, as indicatedr be ater-inserted i~ desired.
The nose piece 16, bracket 12 and side rail 14 connection, particularly illustrated in Figure S, is extremely stout and rigid and it is, of course, ~he con-figuration o these keyed, interitting parts which is responsible. With the new keyed construction, the shear stresses on the clamping bolts are relieved, Moreover, because the brackets 12 are pieces separate from the nose part 16, the nose part can be die cast rather than sand cast and the nose parts 16 can be easily changed where a di~ferent size or configuration is desired. When the user desires to employ a diferent diameter wheel, the position of stair climbers l7 can be adjusted by simply removing theboits 17c while, at the same time, backing off nuts 33b. This is not possible in prior art constrùctions ' ;10 wherein the stair climbers were mounted on the axle. The application of the wear strips 36 is easily accomplished by inserting the wear strip member, shown particularly in .. Figure 14, over the rear edge of each stair clLmber 17, and then bending over the tabs 37 through 41.
It is to be understood that the drawings ànd descriptive matter are in all cases to be interpreted as merely illustrative of the principles of the invention, rather than as limiting the same in any way, since i~ is contemplated that v~rious c~hanges may be made in various ~0 elements to achieve like results without departing from '`the spirit of the invention or the scope of the appended claims.
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Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a two-wheeled hand truck or dolly structure including: a pair of wheels; a primary frame adapted in use to assume a generally vertical position supported by said wheels; a generally forwardly disposed nose part sup-ported by said wheels and connected to project forwardly from the primary frame to receive an object to be carried thereon; said frame at its upper end incorporating a handle portion which can be grasped by the user to propel the truck, along with the product carried by the nose part resting back against the primary frame; said frame com-prising an open framework with the side rails connected by cross rails; an axle connecting said wheels; and axle mounted brackets extending forwardly toward the nose part;
the improvement wherein the nose part and brackets are separately fabricated parts, the nose part has fore to aft extending vertical walls inboard of the sides of said side rails, the side rails have outboard sides provided with external grooves, the brackets have key parts thereon snugly received by the grooves in the lower ends of the side rails; and means clamps said brackets, nose walls and side rails in assembled relation with the key parts within the grooves in the lower ends of said side rails.
the improvement wherein the nose part and brackets are separately fabricated parts, the nose part has fore to aft extending vertical walls inboard of the sides of said side rails, the side rails have outboard sides provided with external grooves, the brackets have key parts thereon snugly received by the grooves in the lower ends of the side rails; and means clamps said brackets, nose walls and side rails in assembled relation with the key parts within the grooves in the lower ends of said side rails.
2. The structure as set forth in claim 1 wherein the side rails comprise inwardly facing U-shaped sections with outwardly disposed leg-connecting webs, and the webs have outboard sides provided with T slot-shaped grooves, said bracket keys being shaped to be snugly received therein; said nose part walls comprising side flanges abutting the inboard sides of said side rails; and bolts through said keyed portions, side rails, and side flanges constitutes the means which clamps the parts securely together.
3. The structure as set forth in claim 2 wherein said side flanges have outwardly projecting bosses to pass said bolts, and fitting elements received by the U-shaped side rails have sockets to snugly receive said bosses.
4. In a two-wheeled hand truck or dolly structure including: a pair of wheels, an axle connecting said wheels; a primary frame, adapted in use to assume a generally vertical position, supported by said wheels;
a generally forwardly disposed nose part supported by said wheels and connected to project forwardly from the primary frame to receive an object; to be carried thereon;
said frame comprising an open framework with side rails connected by cross rails and at its upper end incorporating a handle portion which can be grasped by the user to propel the truck, along with the product carried by the nose part resting back against the primary frame; axle mounted brackets extending forwardly toward the nose part and mounted to the lower ends of said side rails; the im-provement wherein the nose part and brackets are separately fabricated parts with the nose part having fore to aft ex-tending vertical walls inboard of the sides of said side rails opposite bracket walls outboard of the sides of said side rails; and means for clamping the brackets, nose side walls, and side rails in assembled position.
a generally forwardly disposed nose part supported by said wheels and connected to project forwardly from the primary frame to receive an object; to be carried thereon;
said frame comprising an open framework with side rails connected by cross rails and at its upper end incorporating a handle portion which can be grasped by the user to propel the truck, along with the product carried by the nose part resting back against the primary frame; axle mounted brackets extending forwardly toward the nose part and mounted to the lower ends of said side rails; the im-provement wherein the nose part and brackets are separately fabricated parts with the nose part having fore to aft ex-tending vertical walls inboard of the sides of said side rails opposite bracket walls outboard of the sides of said side rails; and means for clamping the brackets, nose side walls, and side rails in assembled position.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA329,477A CA1088120A (en) | 1975-05-27 | 1979-06-11 | Two-wheeled hand trucks |
| CA357,198A CA1105516A (en) | 1975-05-27 | 1980-07-28 | Two-wheeled hand trucks |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/581,212 US3997182A (en) | 1975-05-27 | 1975-05-27 | Two-wheeled hand trucks |
| US581,212 | 1975-05-27 | ||
| CA253,672A CA1063643A (en) | 1975-05-27 | 1976-05-25 | Two-wheeled hand trucks |
| CA329,477A CA1088120A (en) | 1975-05-27 | 1979-06-11 | Two-wheeled hand trucks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1088120A true CA1088120A (en) | 1980-10-21 |
Family
ID=27164495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA329,477A Expired CA1088120A (en) | 1975-05-27 | 1979-06-11 | Two-wheeled hand trucks |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1088120A (en) |
-
1979
- 1979-06-11 CA CA329,477A patent/CA1088120A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |