Improvements in Machines for Lifting and Delivering Bricks or other Articles.
Year: 1888

page_text: Date of Application, 20th July, 1888
Specification Accepted, 31st Aug., 1888
RESERVE
Improvements in Machines for Lifting and Delivering Bricks or other
Articles.
A communication from CARL HEINRICH EICHLER, of 5, Unterer Kreuzweg, Dresden,
in the Empire of Germany, Builder.
I, ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
M.I.M.E., do hereby declare the nature of this invention and in what manner the
same is to be performed, to he particularly described and ascertained in and by the
following statement :-
The present invention relates to machines for lifting and delivering bricks or other
articles and the object is to lift and deliver the bricks to be laid, say for example,
to the different parts of a scaffolding by means of a machine instead of their being
carried up by workmen or thrown up from hand to hand, thus avoiding the danger to
workmen and materially reducing the costs.
In the accompanying drawings:
Fig. 1 is a vertical section on line I-II of fig. 4.
Fig. 2 is part of fig. 1 in another position.
Fig. 3 is a vertical section on line III-IV of fig. 4.
Fig. 4 is a horizontal section on line V-VI of fig. 1.
Fig. 5 is a horizontal section on line VII-VIII of figs. 1 and 3.
Fig. 6 is a horizontal section on line IX-X of fig. 1.
The action of the machine depends on the action of the piston K moving up and
down in the chamber E on which piston rests in turn each brick introduced into the
chamber E through the opening O. The piston raises the brick between the jaws B
which bite the brick and thus prevent it from falling when the piston is being lowered
for the reception of the next brick. Every time the piston is lifted the brick resting
thereon will lift the brick held by the jaws B and the column of bricks which may be
above it in the tube R to the extent of one brick's length until the topmost brick
reaches the inclined shoot S down which it will slide to its destination. To facilitate
the introduction of the bricks through the opening O during each stroke of the piston
it is essential that the chamber E should be free of the piston as quickly as possible.

page_text: This is done by the piston falling down by its own weight after having attained its
highest point, and an india-rubber ring G receives the shock while the wooden
block P on the top of the piston offers to the brick a softer support than the metal
piston would.
The working of the machine can be understood from Figs. 1 to 4. The frame of
the machine consists of the two side frames W connected by tie-rods or bolts Q and
on the top of this frame is fastened the head V. In the frames W are journalled the
shafts A on which are mounted the spurwheels Z gearing with each other and
the eccentric wheels H which are only toothed for about of their circumference.
By turning the wheel T which gears with one of the spurwheels Z by means of the
crank handles the shafts A with the eccentric wheels H are turned in opposite
directions. The ratchet wheel I (fig. 3) mounted on the crank axle F and a pawl
prevent the crank axle from turning in the opposite direction.
The piston rod which is guided vertically in the head V is at its lower end provided
with a double conical rack U which engages with the teeth of the eccentric wheels H
ence during every revolution of the latter. In figs. 1 and 3 the machine is represented
at the moment when the eccentric wheels H turning in the direction of the arrows are
just about to gear with the double rack U to raise the piston K with the brick resting
thereon, and in Fig. 2 the machine is represented at the moment when the piston bas
attained the highest point of its stroke and has introduced the brick between the
jaws B.
Because of the conical form of the rack U the wheels H engaging therewith must
be eccentric and when these eccentric wheels H which have the same number of teeth
as the rack, are turned further, the gearing ceases and the piston K will fall. This
fall would be too sudden if the periphery of the wheels H were not also at their
un-toothed portion eccentric and supported the conical rack during its fall. This is the
reason for the conical form of the rack.
In the head V is the chamber E in which reciprocates the piston K of rectangular
form, and the side of the head V which is provided with the opening for the
introduction of the bricks, may be removed if necessary by unscrewing the nuts M.
To remove any dust which may be introduced with or fall from the bricks two slanting
openings are formed in the bottom of the chamber E.
Above the chamber E is the chamber in which the jaws B are journalled at L.
The top D of this chamber can be unscrewed to obtain access to the jaws and their
journals if necessary. The head V is further provided with a socket for the reception
of the lower end of the tube R in which the bricks are lifted to the desired height.
The machine may be supported on wheels to facilitate its transport and as is obvious
it may be driven by a motor if desired by modifying the gear.
Having now particularly described and ascertained the nature of the said invention
as communicated to me by my foreign correspondent, and in what manner the same
is to be performed, I declare that what I claim is
•
1. In a machine for lifting and delivering bricks or similar articles the combination
of eccentric wheels such as H driven by gearing such as T. Z. Z. with a tapered double
rack such as U, so that after the piston has attained its highest point it slides down
again by its own weight the column of bricks being meanwhile supported by jaws such
as B, B, substantially as herein described and illustrated in the annexed drawings.
2. The combination and arrangements of parts constituting the complete machine
substantially as herein described and illustrated in the annexed drawings.
1000