US 2896802 A
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July 28, 1959 TOY I 2 Sheets-Sheet} Filed March 31, 1958 INVENTORS v CLIFFORD A. STEARN RRI S HOPE ATTORNEYS N. HOPE EI'AL 2,896,802
July 28, 1959 HOPE ETAL 2,896,802
Filed March 31-, 1 958 2 Sheets-Sheet 2 FIG. 3
INVENTORS CLIFFORD A. STEARN NORR\$ HOPE TORNEYS TOY Norris Hope, Camp Borden, Ontario, and Clifford A. Steam, Angus, Ontario, Canada Application March 31, 1958, Serial No. 725,232
2 Claims. (Cl. 214-138) This invention relates to a childrens toy which simulates an excavation crane and is of such a size that the child may operate it on sandpiles or the like.
The invention generally provides a frame simulating the body of a crane and a boom projecting therefrom simulating the boom of a crane. An operative arm is pivotally mounted adjacent the upper extremity of said boom and extends downwardly therefrom and simulates the shovel carrying member of an excavation crane. A shovel is mounted adjacent the lower extremity of said arm and means are provided to move said arm about said pivot point. 1
Prior devices of this general type have suffered from the disadvantage that complicated means were required to tilt the shovel forward away from the crane to ensure that it bit into the ground or sandpile.
This invention allows such forward tilting of the shovel by providing a base which will rest on the surface to be excavated adjacent the excavation site and providing that the frame shall be swingably and rockably mounted on said base, the arm being of such a length that the shovel may be caused to bite into the excavation site by rocking the frame forwardly on the base (on movement of the arm about its pivoted mounting) or that the shovel may be swung through its arc of movement free of the excavation surface by tilting the frame backwardly relative to the base.
Prior devices, because of the linkages used between control means on the frame and the pivotably mounted arm on the boom do not in appearance simulate the appearance of a crane.
A form of this invention effectively simulates the appearance of a crane by providing that the control means shall comprise a lever pivotably mounted on the frame with manual control means above the pivot point and a link with one end connected to the lever below said pivot point and at the other end connected to the shovel mounting arm below said pivot point. By this arrangement the connecting link which does not simulate a part on a real crane is in a low location where it is comparatively insignificant while the boom and the control means, which simulate their counterparts in a real crane, are the salient features of the toy.
In drawings which illustrate embodiments of the invention:
Figure 1 shows a perspective view of the device, and
Figures 2 and 3 show side view thereof.
In the drawings is shown a base preferably of tubular stock adapted to rest on and support the device on a surface to be excavated. A shaft 12 projects upwardly to swingably and rockably mount adjacent the top thereof a frame 16 on a bearing 13. The bearing may be of any convenient type which allows the frame to swing about the axis of shaft 12 and allows a limited amount of rocking movement. In practice we have found that a front wheel auto hearing or the like may effectively be used.
The frame 16 preferably comprises two spaced bars of "ice tubular stock joined at each end by cross members 16 and 28 and centrally joined by a cross plate -14 to make a unitary structure. The cross plate 14 supplies the mounting for the frame on the bearing 13.
a The cross member 28 may be made integral with the parallel bars 16 so that the frame is made from a single U-shaped piece of tubular stock.
The frame 16 therefore projects on each side of the bearing 13, a shortdistance toward cross member 18 and a longer distance toward cross member 28.
A seat 24 preferably of wood is supported adjacent cross member 18 by struts 20 attached to frame members 16 and a strut 22 attached to cross member 18.
It is thus intended that the device may be manipulated by a child seated on seat 24 and facing the other end of the frame with his feet contacting the ground approximately straddling base 10.
Within easy manual reach of'such child therefore is provided a control arm 30 rigidly fastened to one of the frame members 16 and projecting upwardly therefrom and provided at its upper extremity with a hand grip 34. The child may thus control the rock of the device by sitting on seat 24, placing his feet on the ground, his hand on hand grip 34 and rocking the frame forward or back about bearing 13, by pressure on the hand grip.
A right-angled tubular member 32 is rigidly attached to a frame member 16 opposite the point of attachment of control arm 30. The member projects upwardly and then at right-angles across the frame to connect with control arm 30 by any convenient means.
Controllever 35 is pivotally mounted on the crossportion of tubular member 32 preferably by providing an aperture in control lever 35 to receive the tubular member.
Control lever 35 preferably extends above the frame to a height equal to that of control arm 30 and has at its upper extremity a hand grip 36.
The control lever 35 projects below cross portion 32 and has a jog built therein to displace its lower extremity toward control arm 30, for a purpose to be hereinafter described.
Adjacent the cross member 28 on the frame 16 is rigidly attached a cross plate 29 from which two spaced tubular members 26 project upwardly and outwardly of the frame 16 and are joined at their frame remote extremity by a pivot pin 50 extending between them to form the boom of the simulated crane.
An operative arm 48 is pivotally connected to the boom by being mounted on pivot pin 50 and hanging downwardly therefrom. At the lower extremity of the arm 48 a cross member 52 is provided with downwardly extending ears 54 which are attached preferably by riveting to the upstanding walls of a U-shaped shovel member 50. It will be seen that the biting edge 51 of the shovel is designed to contact the excavation surface and that on forward movement of the operating arm 48 the reaction of the excavation surface on the shovel will rotate it backwardly about the rivets to a limit position set by contact of shovel edges 50E on cross plate 52.
The arm 48 is of such a length that the edge 51 of the shovel will bite the excavation surface when the arm 48 swings forwardly in its are if the frame is rocked downwardly at the shovel end but that the shovel will swing clear of the excavation surface when the arm 48 swings forwardly in its arc if the frame is rocked upwardly at the shovel end. The rocking of course refers to the attitude of the frame 16 relative to the base 10 and takes place about the bearing 13.
A trap door or tail gate 57 swingably closes the rear end of the shovel 50 and may be latched closed by latch 58 cooperating with ring 56 on shovel 50. The latch includes a key 59 spring biased downwardly toward latching position and having a ring projecting upwardly therefrom whereby an upward pull on the ring'will 'unlatch the tail gate 57.
A control link 40 ,ispivotally, joined to operating arm 48 by meansvofsplit ring 46 surrounding the arm and having pivot pin 41 to join thelink 40. The control link 40 is at its other end universably connected by joint 38 to operating lever 35 adjacent the lower extremity of the lever and below its pivotalmounting on frame member 32.
It will be obvious that. the connection between link 40 and operating lever 35 might be above the pivotal mounting of the lever or frame member 32. The operating arm 48 with such connection. would still be controllable by the lever, although the lever movemennt to produce movement of operating arm 48 in a given direction would be reversed in relation to that shown in Figure l. However by connecting the link 47 to lever 35 and arm 48 below their respective pivot points the connecting link 47 which does not simulate a part of a real crane, is placed in a comparatively insignificant location. Such location accentuates the salient feature of the boom 26 and control members 35 and 30 all of which simulate parts of a real crane. 7 The accentuation of the boom and control members relative to the connecting link, is increased by extending the connecting link 47 between the spaced boom members 26 and it is for thisreason that a jog may be required in control lever 35.
The connection 38 between control lever and connecting link 40 is preferably a universal one to ensure freedom of movement but it is felt that a simple pivotalconnection will operate. Q
The ring of latching means. 59 is connected to a cord 42 which is threaded through an aperture in split ring 46 and led over to control arm 30 for securement. The cord is of such a length as to normally hand loose.
The structural members are preferably made rounded to avoid injury to children through sharp corners and are made hollow for lightness and easy portability by the child. Thus the device is preferably constructed of tubular stock.
The device is operated by a child seated on seat 24 with his feet contacting the excavation surface and straddling the base 10 which also rests on the excavation surface.
The tail gate 57 being latched closed, the child grasps hand grip 34 on control arm 30 and rocks the frame 16 backwardly relative to base 10 so that the arc of the shovel travel about pivot 50 will be clear of the excavation site. The child with his other hand grasps hand grip 36 of control lever 35 pushing it' forwardly and swinging the arm 48 and shovel 50 to the rearward position. Being ready to excavate the child presses forwardly on hand grip 34 of control arm 30 and gaining any necessary assistance from his feet, rocks the frame 16 forwardly relative to base '10 so that the device is in the position shown by the solid lines of Figure 3.
With the frame still rocked forwardly, the child pulls backwardly on hand grip 36 actuating operative arm 48 forwardly to push some of the surface material into the shovel 50.
When the shovel is sufficiently full, the child may grasp the hand grip 34 of control arm 30 and rock frame 16 backwardly relative to the base 10 so that the shovel clears the excavation surface. Alternatively the forward motion ofthe shovel 50 may be continued with the frame rocked forwardly, until the shovel 50 swings clear of the excavation surface.
In either event, with the shovel full the child may by grasping hand grip 34 of control arm 30 rotate the frame 16 about base 10 in either direction to dump the load in the shovel by' pulling cord 42 and releasing latch'58--59.
The trip 58 may be closed again by swinging the shovel 50 rapidly to the rearward position and closing the latch under a combination of inertia and gravity. V
The excavation process may then be repeated;
What we claim as our invention is:
l. A childs toy comprising: a base for supporting the operational parts of said toy resting on a surface, a frame swingably and rockably mounted on said base, a boom projecting upwardly and outwardly therefrom, an operating lever pivotally mounted adjacent the upper extremity of said boom and extending downwardly therefrom, a shovel mounted adjacent the lower extremity of said operating lever and adapted to contact such surface and means for moving said operating lever about said pivot point.
2. A childs toy comprising a base adapted to rest on a surface,- a frame swingably and rockably mounted thereon, a seat on said frame allowing a child seated thereon to touch his feet to the ground, a shovel movably mounted on said frame adapted to contact said surface in at least some of the rockable positions assumable by said frame relative to said base, means on saidframe allowing control by a child so seated of the movements of said shovel and a control arm connected to said frame having a hand grip thereon for easy manual control of said frame by a child seated on said frame.
References Cited in the file of this patent V UNITED STATES PATENTS 1,827,541 Opperman Oct. 13, 1931 2,247,619 Penica July 1, 1941 2,812,869 Nisperly Nov. 12, 1957 2,822,641 Lamb Feb. 11, 1958 FOREIGN PATENTS 619,367 Great Britain Mar. 8, 1949