Improvements in Ice-shaving Machines.
Year: 1895

page_text: Date of Application, 26th Mar., 1895-Accepted, 27th Apr., 1895
COMPLETE SPECIFICATION.
Improvements in Ice-shaving Machines.
I, CLARENCE EUGENE REID, of No. 214 N. Gay Street, in the City of
Baltimore, State of Maryland, United States of America, Manufacturer, do
hereby declare the nature of this invention, and in what manner the saine is to
be performed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to improvements in ice-shaving machines of that type
adapted for finely shaving ice for use at bars, soda fountains, etc., and it has for its
object to provide certain improved constructions as hereinafter described and
claimed.
The invention is illustrated in the accompanying drawings, in which,
Figure is a side elevation and partial section of my improved ice-shaving
machine.
Figure 2 is a top or plan view of the same..
Figure 3 is a rear end view of the cutter head.
Figure 4 is a detail of the follower and the clip which connects
screw-threaded shaft.
with the
Figure 5 is a side and a top view of the lever-yoke for operating the screw-
threaded clip.
Figure 6 shows, respectively, the yoke in engagement with the clip and a detail
view of the latter.
Figure 7 shows a modification in the means for automatically opening the nut
to disengage it from the shaft.
The letter, A, designates the ice-box or receptacle mounted on suitable
standards, B; E, the screw-threaded drive-shaft journaled in bearings, b, c, on the
exterior side of the box and having at one end a gear wheel, C, gearing with
another gear wheel, D, fixed on a short shaft, E', to which the cutter-head, F, is
connected. The receptacle, A, is open at that end which is adjacent the cutter-
head and at its side where the screw-shaft is journaled, it is provided with a
longitudinal slot, g. A follower, G, conforms substantially to and fits within the
interior of the box and has an arm or extension, h, passed through the longitudinal
slot, g, of the box and suitably attached to one section, i, of a nut, on the exterior
of the box. The two-section nut, i, i, engages with the screw-threaded shaft, E,
and these constitute the means whereby the follower, G, is moved toward the
cutter-head.
The nut is constructed of two semi-circular halves, one half, i, being interiorly
screw-threaded and the other half, i, having a smooth surface, and the two halves
are connected by pins, 2, passed through their side flanges, the construction being
such that the two halves may be separated or moved away from each other for a
distance limited by the length of the said pins without becoming disconnected.
Each half, i,, also is provided with two lugs, denoted, j, on one half and, j', on
the other half, and a yoke-lever, I, has two arms, k, each of which has a hole, k¹,
at the end to pivot on the two lugs, j', of the half, ', and said yoke-lever is
provided with an irregular lateral extension, l, having a curved slot, l, in which
the lugs, j, of the other half, a, of the nut play when the parts are connected.
When the lever, I, is turned one way or the other the slot, l, will act on the
two lugs, j, as a cam, and cause the two halves, i, i, of the nut to either separate
and let go of the threads of the screw, E, or to move closer together and grip the
threads of the screw,-according to which direction the lever is turned. The

page_text: handle or end of lever, I, is operated by stops, m, n, at each end of the said slot, g,
to automatically close and open the nut to engage and disengage from the screw-
threaded shaft in a manner hereinafter described.
The cutter-head, F, is composed of four sections, o, separated by radial slots, o¹,
held in proper relation by a hub, p, having radial spokes or arms, pl, one of which
extends to each section. These parts are cast integrally. The knives, four in
number, are each connected with one of the sections by screws passed through them
and also through screw-threaded holes in ears, 9, on the rear side of the head. Said
ears and the edge of the section at the slot through which the knives project, have a
slight inclination so as to project the edges of the knives in a similar manner to that
of the blade of a carpenter's plane. This construction of cutter-head is productive
of great advantages. By having four knives instead of two or three, the ice-
shaving operation is greatly facilitated, and by having the slots, o, unobstructed
from the center to the edge of the head there is rapid clearance of the shaved
ice and consequent freedom of the knives from clogging. The cutter-head is
covered by a hood, u, the vertical part, u¹, of which serves as a bearing for one
end of the short shaft, E', to which the hub, p, is connected. A sliding receptacle
or drawer, v, is beneath the cutter-head to receive the shaved ice.
.
In the modification shown in Figure 7, two chains, s, s', are employed in place of
the stops, m, n, to engage and disengage the nut from the screw-shaft; one end of
chain, s, is secured to the bearing, b, and the other end to the lever-arm, I, while
one end of chain, s¹, is attached to the bearing, c, and the other end to the lever
arm. When commencing the shaving operation and the nut, i, i', is near the
bearing, b, chain, s, hangs loose or slack and the other chain, s', taut, but when
the nut arrives near the bearing, c, the limit of said chain, s. is reached and the
yoke-lever is operated to release the nut halves; in a similar manner the lever-arm
is operated when moved back or in the reverse direction toward bearing, b, by the
chain, s', to cause the nut to again engage the screw-shaft.
The operation is as follows: The ice to be shaved is placed within the box, A,
between the follower, G, and the cutter-head, F. The two-part nut is locked to
the screw-shaft, E, by turning the yoke-lever, I. The screw-shaft is turned through
the medium of the crank, J, to move the follower forward, and the gear-wheel, C,
connected with the screw-shaft engages the gear-wheel, D, on the short shaft, E',
to which the cutter-head is fixed, and revolves the latter. The shaved ice drops
down into the slide drawer, v, from which it may be removed as desired. As soon
as all the ice has been shaved and the handle, I, of the yoke-lever strikes against
the stop, n, the said handle, by the continued advance of the two-part nut, will be
pressed back and the halves of the nut forced apart and thus disengaged from the
Screw-shaft. The follower and nut are then moved back by hand until the handle, I,
reaches the stop, m, and forces the yoke-lever back to its original position,
whereupon the two-part nut is closed and is again forced into engagement with the
screw-shaft.
When additional ice is placed within the receptacle the operation of shaving
just described may be repeated.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is,-
1. In an ice-shaving machine, the combination of a covered box or receptacle, A,
having in its side a longitudinal slot, g; a cutter-bead mounted at one end of the
box; a screw-threaded shaft journaled in bearings on the exterior of the receptacle
and parallel with the said longitudinal slot; a follower in the receptacle; a nut on
the said screw-shaft formed of two halves one of which is connected by an arm, h,
extended through the longitudinal slot, to the said follower; a yoke-lever connected
with the nut halves; and means for automatically operating said yoke-lever to
cause it to close and open the two halves of the nut and thereby engage the nut
with or disengage it from the said screw-shaft.

page_text: 2. In an ice-shaving machine, the combination of a covered box or receptacle, A,
having a longitudinal slot, g, in its side; a screw-threaded shaft journaled on the
exterior side of the box and parallel with the said longitudinal slot; a cutter-head
mounted at one end of the box; a follower within the box having an arm, h,
extended through the longitudinal slot to the exterior; and means coacting
between the screw-shaft and arm, h, to move the follower back and forth within
the receptacle.
3. In an ice-shaving machine, the combination of the box or receptacle having
one end open and provided with a longitudinal slot in its side; a screw-threaded
shaft journaled in bearings on the exterior side of the receptacle adjacent the slot
and provided with a gear wheel, C; a short shaft, E', having a gear wheel, D,
meshing with the gear wheel first named; a cutter-head, F, mounted on the short
shaft and having position at the open end of the box,-said cutter-head composed
of four sections separated by a slot and united by a radial arm extending from
each section to a hub, p; a knife arranged in each slot and secured to the
section; a follower in the box; and a nut on the screw shaft and attached to
the follower.
Dated this 4th day of March 1895.