Improvements in Skiving Machines.
Year: 1893

page_text: Date of Application, 7th Mar., 1893-Accepted, 27th May, 1893
COMPLETE SPECIFICATION.
Improvements in Skiving Machines.
I, REGINALD HADDAN, of the firm of Herbert Haddan & Co., of 18 Bucking-
ham Street, Strand, W.C., London, Patent Agent, do hereby declare the nature
of this invention a communication to me from abroad by Jacob Rookhard Scott,
of New York, N.Y., United States of America, Manufacturer, and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement :-
This invention relates to certain improvements in skiving machines as pointed
out in the following Specification and claims and illustrated in the accompanying
drawing in which,
Figure 1 represents a front view.
Figure 2 is a top or plan view.
Figure 3 is an end view looking in the direction of arrow 1 in Figure 1.
Figure 4 is a transverse vertical section in the plane a Figure 1.
Figure 5 is a similar section in the plane y y Fig. 1.
Figure 6 is a face view of the die roller detached.
Figure 7 is an end view of the clutch sleeve detached on a smaller scale than the
previous figures.
Figure 8 is an end view of the driving pulley.
In this drawing the letter A designates the base of a frame which is supported
by a column B or any other suitable means. From the base A rise three
standards C, D, E, and the standards D E are connected by a vertical web F,
all these parts being cast or formed in any other suitable manner.
The standards DE form the bearings for a shaft G on which is mounted a
cogwheel c which engages a cogwheel d mounted on the driving shaft I which has
its bearing in the standard E and on which is loosely mounted a belt pulley e which
can be thrown in gear with the shaft I by means of a clutch sleeve f. This clutch
sleeve is feathered on the driving shaft and it is actuated by means of a lever
mounted on a bracket which extends from the base A and which can be secured
in the desired position by means of a pin i.
The
In the standands D E is also mounted a shaft J which forms a bearing for a
bifurcated lever K in the upper ends of which is mounted a shaft H which is geared
with the shaft G by the cogwheel which meshes into the cogwheel a.
lever K is exposed to the action of two set screws kk (Fig. 5) by means of which
it can be adjusted and locked in the required position. The shaft G carries the die
roller L and the shaft H the feed roller M. By means of the set screws k k the
feed roller can be adjusted at the required distance from the die roller. The die
roller L carries the die and the end gauge m. The die projects beyond the
periphery of the roller L and it is provided with an L shaped shank which
engages a corresponding groove 2 in the body of the die roller. A set screw 1³
serves to secure the die in the required position (Figs. 4 and 6). By these means
the die can be adjusted to conform to the width of the article to be skived. The
end gage m is provided with an L shaped shank m' which engages a groove m² in
the body of the die roller and a set screw m³ (Figs. 4 and 6) serves to secure the
end gage in the required position.
On the top of the lever K (see Fig. 1) is secured a bracket N from which
extends a guard n over the feed roller M. The rear end of the guard (see Fig. 2)
forms the bearing for a pin n¹ on which are mounted a series of scrapers n² (Fig. 1)
which extend into circular grooves in the feed roiler and which can be adjusted by
means of set screws n³ extending through a flange n² (Figs. 2 and 4) and bearing
on the tail ends of the scrapers. The object of these scrapers is to prevent the
D

page_text: teeth of the feed roller from becoming clogged up by particles of leather during
the operation of skiving.
The cogwheels a bare protected by a hood o extending from a bracket O which
is secured to the standard E. On the top of the standard D is secured a bracket P
which carries the edge gage p.
Qis the knife which is secured to the head R and can be adjusted and locked in
the required position by screws 99 and set screws q'q'. The knife head R is
mounted on a shaft r which has its bearings in the standards C D and from this
head extends a toothed segment which engages a worm screw s mounted in
a lever S (best seen in Fig. 4) which swings an arbor s¹ and is exposed to the action
of a screws. By means of the worm screws the cutting edge of the knife can be
adjusted at the required distance from the die roller and by means of the screw s²
the worm screw can be forced up firmly against the toothed segment so as to
lock the knife in the required position.
The arbor has its bearings in the standards CD but it extends beyond the
standard C, (Figs. 1 and 2) and forms the guide for a bracket T which is provided
with a fixed bearing t for the outer end of the shaft G and with an adjustable
journal box t' for the outer end of the shaft H. A set screw t2 serves to lock this
adjustable journal box in the required position, and this journal box is made
adjustable in order to be able to accommodate the same to the movements of the
feed roller if the same is adjusted towards and from the die roller by means of the
lever K and the set screws kk (Fig. 5).
The bracket T is locked on the shafts by means of a set screw and when this
set screw is unscrewed the bracket can be moved out on the shaft s' so that different
die rollers L can be introduced on the shaft G said die rollers being feathered on
the shaft G. The die shown in the drawing is intended for producing lifts for
boot or shoe heels but it is obvious that dies for different articles such as counter
stiffeners, insoles or shank stiffeners may be introduced, and in order to accomplish
this purpose, the die roller is provided with the L shaped groove 12 as above
described. It must also be remarked, that the knife splits the blank as the latter
is carried between the die roller and the feed roller and the amount split off depends
upon the formation of that portion of the die which protrudes beyond the surface
or periphery of the die roller.
The feed wheel M is provided with sharp long teeth so that the surplus material
is pressed into these teeth and firmly held until the knife separates said surplus
from the body of the blank. Of course in order to accomplish this purpose the
lever which carries the shaft of the feed wheel must be firmly locked in the
required position.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The combination substantially as herein described of the knife Q, the die
roller L and its shaft G mounted in fixed bearings, the feed roller M and its
shaft H mounted in adjustable bearings and the movable bracket T provided with
a fixed bearing for the shaft G and with an adjustable bearing for the shaft H.
2. The combination substantially as herein described of the knife Q, the die
roller L and its shaft G mounted in fixed bearings, the feed roller M and its
shaft H mounted in adjustable bearings and means for locking said bearings in the
required position.
3. The combination substantially as herein described of the die roller L mounted
on a rotary shaft G, the feed roller M mounted on a rotary shaft H, the knife
head R mounted on the shaft r, the knife Q secured to the knife head, the toothed
segment extending from the knife head, the swinging lever S, the worm screw s
mounted in this lever and engaging the toothed segment ¹, and the screw s² acting
on the lever S.
4. The combination substantially as herein described of the knife, the die roller,

page_text: the feed roller provided with circular grooves and the scrapers extending into said
grooves.
5. The combination substantially as herein described of the knife, the die roller,
the feed roller provided with circular grooves, the guard n extending over the feed
roller, the scrapers n³ suspended from the guard and the set screws n³ for adjusting
the scrapers.
6. The combination substantially as herein described of the knife, the feed
roller, the die roller, the die land means substantially as described for laterally
adjusting said die.
7. The combination substantially as herein described of the knife, the feed roller,
the die roller provided with a groove m the end gage m provided with a shank to
engage the groove m² and the set screw m³ for securing the end gage in the
required position.
L. -ALני.
R. HADDAN.