Pouncing-Machine. Page: 5 of 8
[3], 8 p. : ill. ; 23 cm.View a full description of this patent.
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602,977
device will be hereinafter described. Any
good chuck will serve. The block rotates in
the direction of the arrows thereon.
In the column of the pedestal is rotatively
5 mounted an upright hollow shaft 13, which
incloses the shaft 7 and is concentric there-
with. At its upper end this hollow shaft car-
ries a locking-disk 14, placed just beneath
the gear-wheel 8. By means of this disk the
io operator can at will lock the shaft 13 to the
head 2, so that the shaft 13 will turn the head
and unlock it again, so that the head may be
turned back again to the starting-point with-
out turning the shaft 13 back. This inech-
15 anism is best seen in Fig. 5. In the disk 14
are teeth, like gear-teeth, and on a handle 15,
fixed to the head 2, for turning said head back
after each pouncing operation, is mounted a
spring-dog 16, adapted to be pressed into lock-
20 ing engagement with the teeth in the disk 14
by its spring. This dog is furnished with a
thumb-lever 17, whereby the operator grasp-
ing the handle 15 may at the same time press
the thumb-lever and withdraw the dog 16
25 from engagement with the disk 14.
At its lower end, in the hollow base of the
pedestal 1, the hollow shaft 13 has fixed on it
a toothed wheel 18, with which gears a planet-
pinion 19, rotatively mounted on an upright
30 stud in the bevel-wheel 6. Just above the
wheel 18 is another toothed wheel 20, fixed
to the pedestal and also in gear with the pin-
ion 19. The wheel 20 has one tooth more
than the wheel 18. One wheel may have, for
35 example, eighty teeth and the other eighty-
one teeth. As the bevel-wheel 6 rotates the
pinion 19 rolls around the fixed wheel 20, and
thus advances the wheel 18 one tooth at each
revolution of the wheel 6. Thus a very slow
40 motion is imparted to the shaft 13 relatively
to the shaft 7.
I will now describe the pouncing devices.
A counter-shaft 21 is mounted in bearings on
the pedestal and is driven from the main
45 shaft 3 through gear-wheels 22. Thus the
counter-shaft 21 is rotated rapidly. On the
end of this shaft is a crank-disk 21X, in which
is a crank-pin 21". On this pin is rotatively
mounted a block 21b, and to this block is piv-
50 otally coupled a yoke 23 on the lower end of
an arm 23, which carries the pouncing-pad,
(indicated as a whole by A in Fig. 1.) In or-
der to impart to said pad motion in an ellip-
tical or circular path through the arm 23,
55 means are employed which will now be de-
scribed, with especial reference to Figs. 1, 2,
and 4. A swing -frame 24 is hinged at its
lower end to a bracket 25 on the column of
the pedestal and embraces the arm 23. This
6o frame has two side plates or branches, and
between the upper ends of said branches is
pivoted at its ends, on pivots 26, Fig. 4, a
rocker 27. On the face of this rocker next
to the machine is mounted a guide-block 28
65 for the arm 23. This guide-block is secured
- to a journal 271, which has a bearing in the
rocker 27, such bearing being at right anglesto the pivotal axis of said rocker. In the
face of the guide-block is a dovetail groove
to receive a wearing-plate 23", fixed to the 7c
arm 23. The upper end of the frame 24 is
coupled by a rod or link 29 to an arm 30,
Figs 1 and 3, fixed adjustably on the upper
extremity of a rock-shaft 31,which has bear-
ings in a conical bracket-casing 32 on the col- 75
umn of the pedestal 1. Within the bracket-
casing 32 is a conical spiral spring 33, one
extremity of which is fixed to the bracket-
casing and the other or upper end to the shaft
31. This spring by its torsional resiliency So
tends to draw the pouncing-pad up to the hat
on the block. The conical form of the spring
is quite important, as it serves to steady the
spring and equalize its action. A spiral spring
of uniform diameter becomes distorted under 85
the strain.
To regulate the tension of the spring 33, the
arm 30 is mounted to swing radially on the
shaft 31 and is provided with a pawl or dog
30X in Fig. 3, which engages teeth on a frag- go
mentary ratchet-disk 30, fixed on said shaft
31. This is merely one form of tension-regu-
lating device. Other known forms may be
substituted therefor.
The arm 23 will be made of hard wood, by 95
preference, as it should be light, strong, and
stiff. On its upper end it carries the pounc-
ing-pad A. (Best illustrated in Figs. 1, 8, and
9.) On the upper extremity of the arm 23is
secured a metal hook 34 to support the upper io00
end of the pad, and on the said arm, below
this upper hook, is mounted in an adjustable
manner a hook 35 to support the lower end
of the pad. The pad comprises two like end
plates 36 and a flexible strip 37, composed, 105
by preference, of a backing of leather faced
with soft vulcanized rubber. This strip is
secured at its ends to the plates 36, and these
are adapted to be engaged loosely with the
respective hooks 34 and 35, so that the pad 110
may turn or rock about its longitudinal axis
to permit it to adapt itself the better to the
surface of the hat in passing about the curve
which joins the side to the top of the crown
thereof. 115
A strip of sandpaper suitable for pouncing
is applied to the face of the pad and prefer-
ably in the manner following: In each end
piece or plate 36 is a transverse slot, Figs. S
and 9, and in the end plate occupying said 120
slot is a clamping cam-roller 38, having a
thumb-piece 381 at its end for operating it
and a flattened face 38', Fig. 8. The strip of
sandpaper 39 is mounted on a reel or spool
40 on the lower hook 35 and its end is carried 125
through the slot in the upper end plate, down
over the face of the strip 37, and back through
the slot in the lower end plate, as seen in Fig.
1. The slots are opened to allow the strip of
sandpaper to pass by bringing the flattened 130
faces on the clamping-rollers around to the
clamping - margins of the respective slots.
When the paper is in place, the rollers 38 are
turned to the position seen in Fig. 8, so as to2
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Reference the current page of this Patent.
Clarke, George R. Pouncing-Machine., patent, April 26, 1898; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth508941/m1/5/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.