Improvements in Hand-trucks.
Year: 1897

page_text: Date of Application, 21st Sept., 1897-Accepted, 13th Nov., 1897
COMPLETE SPECIFICATION.
Improvements in Hand-trucks.
We, PHILIP ISAIAH MARVEL and JOSEPH HUBBARD MARVEL, both of the City
and County of Atlantic, State of New Jersey, one of the United States of America,
the former a Doctor of Medicine, and the latter a Clerk, do hereby declare the
nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:
Our invention relates to improvements in that class of trucks for handling and
transporting packages, as barrels, boxes, and the like which are furnished with hooks
or grapples adapted to assist in loading the package upon the truck.
Our invention consists-1st, in a novel means for attaching the grapple to the
body of the truck whereby a greater reach or swinging movement of the grapple
may be obtained; 2nd, in an improved means for locking the grapple arm to
the swinging carrying arm; 3rd, in an improved automatic operating shoe carried
by the lower end of the truck.
In the accompanying drawings in which similar letters of reference indicate
similar parts throughout the several views; Fig. 1 is a perspective view of a
truck and a barrel, the former being furnished with our improved form of
grappling iron which is shown engaging the latter; Fig. 2 a side elevation of
our truck showing a barrel carried by a shoe and the grappling iron; Fig. 3 a
similar view showing the barrel carried by the grappling iron and shoes half
way up the side rails of the truck; Fig. 4 a side elevation of the truck showing
its position when first engaging the barrel in order to lift it to the position shown
in Fig. 3; Fig. 5 a side elevation of the truck carrying a trunk; Fig. 6 a per-
spective view of truck carrying a box, the grappling iron being extensible and
being carried by a disc eccentrically pivoted to the swinging arm; Fig. 7 a
perspective view of truck carrying two grappling irons; Fig. 8 a side elevation
of the upper part of the swinging arm, Fig. 6 showing the inside end of grapple
arm, disc which carries this arm, and pawl for engaging ratchet on disc; Fig. 9
a plan of Fig. 8; Fig. 10 a side elevation of disc; Fig. 11 an end elevation of
disc; Fig. 12 a perspective view of lower end of truck furnished with a stationary
smooth shoe and with a pivoted claw shoe, the latter of which may be thrown
into or out of operative action; Fig. 13 a perspective view of the swinging grapple
carrying arm; Fig. 14 а perspective view of the
upper end
this arm showing the folding of the metal at this point; Fig. 15
a perspective view! of outer end of grapple arm carrying a hook
cover which is used when handling articles likely to be injured by the
hook; Fig. 16 a detail showing the axle of the truck and, in section the side rail,
wheel and bushing or bearing interposed between wheel and axle; Fig. 17 a per-
spective view of stationary shoes carried by lower end of trucks Figs. 1 and 6;
Fig. 18 a side elevation of lower part of truck furnished with a shoe. which is
by the weight of the package lifted automatically pushed under the package, the
shoe being in this figure out of engagement with the package; Fig. 19 a similar
view the shoe engaging the lower end of the package; and Fig. 20 a front
elevation of Fig. 19.
of

page_text: A are the side rails and B the wheels of the truck; C, Figs. 1, 2, 3, 4, 5, 6, 7, 12
and 17 is a metal shoe or shoes carried by the forward end of the truck;
D, Figs. 1, 2, 3, 4, 5, 6, 7, 8, 9, 13 and 14, is a rocking arm pivoted upon a rod
or shaft E which passes through and is carried by the side rail A; F is a hook or
grapple carried by the upper or free end of arm D and which is so arranged that
it may be slid back or forth on this arm so as to increase or diminish its reach,
suitable means being employed for locking it at any desired point. In Figs. 1
and 2 the arm F is shown furnished with a sliding dog G which, when the point
of the hook or grapple engages the packages to be lifted on the truck, engages
the arm D and locks the grapple to the arm; the hook or grapple, the swinging
arm, the truck and the package forming together a perfectly rigid truss.
In operating the device shown in Fig. 1 the truck is raised to an approximately
vertical position and is run against the package to be lifted. The iron pointed
shoes C engage one side of the package and the hook or grapple F is swung over
so as to engage its other side. The locking device or dog G is now slid along
the hook until it engages the arm D; the operator now bears down on the upper
ends or handles of the side rails A and as he does so the package is lifted from the
ground to the truck.
If the package to be lifted is one liable to be damaged by a hook, the point
of the hook may be covered by a suitable sheath H as shown in Figs. 5 and 15.
In Figs. 3 and 4 the side rails of the truck are shown furnished with adjustable
points or shoes C₁ placed about half way up the side rails A. By means of this device
barrels or other packages may be raised from the ground to a considerable height
as shown in Fig. 3. Fig. 4 shows the position of the truck Fig. 3 when engaging
the package on the ground. By means of this device packages may be stacked
on one another.
In Fig. 6 the shank of the hook is shown made in two pieces F1, F2 which are
secured together by clips I. This arrangement permits the hook to be lengthened
or shortened as may be necessary.
In Fig. 7 the truck is furnished with two sets of hooks or grapples which are
coupled and which act as one.
J, Figs. 6, 7, 8, 9, 10 and 11, is a disc which is eccentrically pivoted at K to
the free end of the rocking arm D. One side of the grapple lies against the inner
side of one side of the swinging arm, the other against the disc which latter is
furnished with a slot L to carry the hook or grapple. The slot L is slightly wider
than the hook or grapple so that this latter may be slid back or forth for adjust-
ment.
In order for the successful operation of this device it is necessary that either
the disc J be locked to arm D and then the grapple locked to this disc or
that the grapple F itself be locked to the arm D. In Fig. 6, M is a sliding 4
dog carried by arm D. When the grapple is engaged with the package to be
lifted the dog M is slid up until its upper end engages the upper part of arm F
as shown; this firmly locks this arm preventing any longitudinal movement of
the same and also prevents any rotation of the arm or disc about the pivot K,
and when the handles are lowered by the operator the weight of package is trans- 4
ferred to and lifted upon the truck.
0
In Figs. 8 and 9 that part of the periphery of the disc J opposite the pivot K
is furnished with teeth N with which a pawl O pivoted to arm D at P is adapted
to engage. When the grapple is engaged with the package to be lifted the pawl O
is engaged with one of the teeth N and when the strain of lifting the package is a
thrown upon the grapple the disc is prevented by the teeth and the pawl from.
rotating upon the pivot P, at the same time the grapple arm F is locked so that
its upper end binds against the upper forward end of the notch in the disc,
while its lower end binds against the lower rear end of this notch, the arm being
thereby locked to the disc.
The eccentric pivoting of the disc permits a greater swinging movement of
the grapple arm than would be possible without it.

page_text: In Figs. 7 and 12 the truck is shown furnished with, in addition to the ordinary
plain shoe C, a hooked or pointed shoe C2 which is pivoted to the side rails À
and which may be thrown into or out of operative action as desired.
In Figs. 18, 19 and 20 the shoe C is not attached directly to the truck but its
rear end is pivotally secured to the lower end of a lever R which is pivoted to
the side rails of the truck at S. T is a keeper carried by the side rails A which
prevents the shoe C from falling too low down.
When the truck is advanced to the package to be lifted, it, the truck, is in
substantially the position shown in Fig. 18 and the upper end of the lever R
projects out beyond the truck while the shoe C is out of engagement with the
package as soon, however, as the weight of the package is thrown against upper
end of lever R this end of the lever is forced inwards and its lower end outwards
and the shoe C is thus automatically pushed in under the package.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
1. The combination, with a truck, of a swinging arm, a hook or grapple carried
by the upper or free end of said swinging arm, and means whereby said hook
and swinging arm may be locked together.
2. The combination, with a truck, substantially as illustrated, of a swinging
arm pivoted at its lower end, a disc eccentrically pivoted to the upper end of said
arm, a grapple carried by said disc, and means for preventing said disc from
turning upon its pivot, all substantially as, and for the purposes, set forth.
3. The combination, with a truck, substantially as illustrated, of a swinging
arm pivoted at its lower end, a disc eccentrically pivoted to the upper end of
said arm, a slot in said disc, a grapple the arm of which passes through said slot,
teeth upon the periphery of said disc, and a pawl pivoted to said arm adapted to
engage said teeth.
4. The combination, with a truck, substantially as illustrated, of an arm or
upright carried by said truck, a disc eccentrically pivoted to the upper end of
said arm, a grapple carried by said disc, and means for preventing said disc from
turning upon its pivot when the grapple is in use.
5. The combination, with a truck, substantially as illustrated, of a movable shoe
and means for automatically projecting said shoe when the weight of said package
is thrown upon or against said truck.
Dated this 1st day of September 1897
PHILIP ISAIAH MARVEL, M.D.
JOSEPH HUBBARD MARVEL.
D. Young & Co.,
11 and 12 Southampton Buildings, London, W.C.,
1
Agents for the Applicants.