Year: 1887

page_text: Date of Application, 8th Nov., 1887
Specification Accepted, 9th Dec., 1887
A communication from FRANK W. STONE, of Lynn, in the County of Essex and
Commonwealth of Massachusetts, United States of America, Mechanic.
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 be particularly described and ascertained in and by the
following statement :-―
This invention relates to mechanisms for supporting boots and shoes during the
operation of manufacture the nature thereof is fully described hereinafter.
Referring to the drawings Fig. 1 is a rear elevation Fig. 2 is a side elevation
made partly in sections Fig. 3 is a section on line 33 looking towards the right.
The supporting post or column A has on its top end a cap B which is firmly secured
to the post and is provided with upwardly projecting bosses in which are sockets to
receive the trunnions a a said trunnions are lateral extensions on the vertical sleeve F
and support the sleeve in position as shown in the drawings. The trunnions permit
turning in their sockets to allow movement of the sleeve from a vertical to an inclined
position. The sleeve is bored out to receive the end or tang of block H which block H
has on one end the toe rest and on its opposite end the heel block h. Said block his
connected as shown to the block H and carries on its top end the last m. It is also
connected to one end of spring S the opposite end of which spring is attached to
the plate n and the tension of the spring is exerted in rocking forward the heel block
and consequently holding the last pressed down upon the toe rest k.
The supporting
block H is formed with a shoulder to bear upon the top end of the sleeve F to the
end that stability and power of resisting a downward blow may be imparted to the
jack.
In operation the shoe is placed upon the last m. In many cases as in the process
of lasting tacks are driven into the shoe by a blow downward upon the last and the
quality of stability and power to resist the blow is useful in effecting the driving of
the tack. This quality is largely augmented by supporting the sleeve upon trunnio
and allowing the block H to bear solidly upon the sleeve as shown.

page_text: It is desirable at times to tip the last from a vertical to an inclined position. To
this end the trunnions a a turn in their bearings as before stated. It is also desirable
at times to lock the jack and hold it in the inclined position. To this end a groove is
provided in the supporting bosses so that by drawing together the sides of the box
and closing them about the trunnion the jack is positively locked. To facilitate this
operation a screw is employed which turns loosely in one half of the boss and
engages a screw thread in the other as shown. It may be operated by a suitable
handle or wrench as shown. It may at times be desirable to lock the jack in its
vertical position by a similar operation of the screw ; this may be effected and the
stability of the whole jack mechanism may be thereby increased.
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. A post A having upwardly projecting bosses, the sleeve F provided with
trunnions and a last supporting mechanism combined substantially as described.
2. The sleeve F having trunnions a combined with post A and mechanism for
clamping and holding the trunnions and a last supporting mechanism mounted on the
sleeve substantially as described.
3. In a jack mechanism constructed substantially as described the supporting
column A having upward projections or bosses adapted to receive the trunnions a
and a screw for closing together the projections and clamping the trunnions substan-
tially as and for the purpose described.
Dated this 8th day of November 1887.
W. P. THOMPSON & BOULT,
Agents.