PRIVing machines.
Year: 1895

page_text: PRIVing machines.
We, FREDERICK SQUIRE and FREDERICK SQUIRE the younger, both of
122, Hackney Road, in the County of London, Engineers, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in skiving machines whereby they are
adapted for skiving skeleton split lifts.
For this purpose we provide the machine with a carrier adapted to hold the
skeleton split lift and arranged to bring it directly over the vertical plunger and
under the sliding knife.
Our carrier is recessed so as to receive and hold the skeleton or horse-shoe lift
which being placed on the carrier the latter is swung or slid between the top plate
and the plunger of the machine, the said plate being formed with an opening of the
same shape as but somewhat smaller than the lift to be skived. The plunger being
now raised by the treadle in the usual manner will press up the inner edge of the
skeleton lift so as to bring it above the surface of the plate, and the knife being
brought forward will skive off the projecting portion of the lift. The plunger is
then lowered and the knife moved back the carrier is swung or slid outwards and
the lift removed leaving the machine ready for another lift.
By our improved machine we are enabled to produce skived skeleton split lifts
with great speed and economy, the skiving being effected in a more perfect and
regular manner than hitherto.
Dated this 18th day of July 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
Improvements in Skiving Machines.
We, FREDERICK SQUIRE and FREDERICK SQUIRE the younger, both of
122, Hackney Road, in the County of London, Engineers, 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 :-
This invention relates to improvements in skiving machines whereby they are
adapted for skiving skeleton split lifts.
For this purpose we provide the machine with a carrier adapted to hold the
skeleton split lift and arranged to bring it directly over the vertical plunger and
under the sliding knife.
To enable our invention to be fully understood we will describe the same by
reference to the accompanying drawings, in which:-
Figure 1 is a plan of a skiving machine having our improvements applied
thereto :

page_text: Figure 3 is a section on the line 3-3 of Figure 1; and,.
Figure 4 is a detail.
a is the frame of the machine, and 6 is the sliding knife mounted in the carriage c
which slides in the guides d fixed to the frame a of the machine, being reciprocated
by means of the hand levere which is pivoted to the carriage c at f and to the free
end of a link g pivoted to the frame of the machine at h, as shewn clearly in
Figure 1.
h is a spring-roller mounted in the carriage c in front of the knife for
compressing the leather during the skiving operation.
i is the vertical plunger and ¹ the head of the same, the said head having its
upper surface convex. The plunger is retained in its lowermost position by
means of the spring; which is coiled on a rod k passing through the frame of the
machine and fixed to the vertical plunger i. The said spring presses at one end
against a nut on the lower end of the said red and at the other end against the
frame of the machine so that, when the plunger is raised, the said spring j is com-
pressed and tends to move the plunger downwards. The upward movement of the
plunger is effected by means of the lever pivoted to the frame of the machine
at m and one end engaging in a slot n in the lower end of the plunger whilst the
other end is adapted to be pulled downwards in any suitable manner, such as for
instance, by the pressure of the foot on a foot lever or treadle.
o is our carrier adapted to hold the skeleton split lift and consisting of a plate
pivoted at p to the top plate of the machine and arranged under the top plate q of
the machine. This carrier o is provided with a recess r, for receiving the skeleton
split lift to be skived, and also with a knob or handles for swinging it out from
under the top plate of the machine so as to enable a split lift to be introduced into
the recess.
The top plate q is provided with a hole or opening u of the same shape
as, but somewhat smaller than, the lift to be skived and is removable so that a
plate having a smaller or larger opening u and a carrier with a correspondingly
smaller or larger recess can be used in the machine.
t is a stop arranged on the underside of the top plate 7 so as to stop the move-
ment of the carrier o when the recess in the said carrier has arrived directly under
the opening in the top plate q.
The operation of the machine is as follows:-
The carrier o is swung out from between the plunger and the top plate 9 of the
machine into the position shewn in dotted lines in Figure 1. The skeleton or
horse-shoe lift to be skived is then placed in the recess in the said carrier and the
latter is then swung back underneath the top plate of the machine until it is
brought to rest by the stop t. The lever is now depressed thereby raising the
plunger i so that the split lift is forced upwards by the said plunger until its edge
is caught under the edge of the opening u in the top plate q as shewn clearly in
Figure 4. As the upper surface of the head of the plunger is convex the central
portion or inner edge of the lift is forced above the surface of the top plate q so
that, when the knife is pulled forward by means of the hand lever the projecting
portion of the lift is sheared off. The knife is then returned and on releasing the
lever from pressure, the plunger i is drawn downwards by means of the spring ;
so that the carrier o can be pulled outwards from between the top plate q and the
head of the plunger i and the skived skeleton lift removed from the machine.
e,
By our improved machine we are enabled to produce skived skeleton split lifts
with great speed and economy, the skiving being effected in a more perfect manner
than hitherto.
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 skiving machine of a pivoted carrier adapted to hold
skeleton split lifts substantiall..

page_text: 2. The manufacture and use of the improved skiving machine herein before.
described and illustrated in the accompanying drawings.
Dated this 20th day of April 1896.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.