Improvements in the Manufacture of the Cases of Padlocks.
Year: 1887

page_text: Date of Application, 9th Nov., 1887
Complete Specification Left, 23rd July, 1888
Complete Specification Accepted, 24th Aug., 1888
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of the Cases of Padlocks.
I JONAH BANKS trading as Abraham Thompson and Company of Temple Bar Works
Willenhall in the County of Stafford Manufacturer do hereby declare the nature of
this Invention to be as follows:-
In the ordinary method of manufacturing the cases of padlocks the two sides of
the case are made of similarly shaped plates of iron cut out by a press. These are
separated and fixed at the required distance apart by a strip of sheet iron bent into
the outline of the case the three parts being connected together by rivets.
In manufacturing the cases of padlocks according to my invention I form from
sheet iron steel or other ductile sheet metal or alloy two exactly similar blanks the
said blanks having in outline the figure of the case to be made. The edges of the
said blanks are cupped or turned at or nearly at right angles excepting at the parts
forming the ears or parts to which one end of the bow is jointed and between which
the free end of the bow passes to enter the body of the lock. Each of the cupped or
turned in edges is of a breadth equal to one half the thickness of the case to be
made.
When the two blanks described are placed together with their concave sides
towards each other their edges are brought into contact and the sides are kept at the
required distance apart. The two parts of the case are rivetted together.
W. T. WHITEMAN,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in the Manufacture of the Cases of Padlocks.
I JONAH BANKS trading as Abraham Thompson and Company of Temple Bar
Works, Willenhall in the County of Stafford, Manufacturer do hereby declare the
nature of my Invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
In the ordinary method of manufacturing the cases of padlocks the two sides of
the case are made of similarly shaped plates of iron cut out by a press. These are
separated and fixed at the required distance apart by a strip of sheet iron bent into
the outline of the case, the three parts being connected together by rivets.
In manufacturing the cases of padlocks according to my invention I form from
sheet iron, steel or other ductile sheet metal or alloy two exactly similar blanks the
said blanks having in outline the figure of the case to be made. The edges of the
said blanks are cupped or turned at or nearly at right angles excepting at the parts
forming the ears or parts to which one end of the bow is jointed and between which
the free end of the bow passes to enter the body of the lock. Each of the cupped
or turned in edges is of a breadth equal to one half the thickness of the case to
be made.
When the two blanks described are placed together with their concave sides towards
each other, their edges are brought into contact and the sides are kept at the required
distance apart. The two parts of the case are riveted together.
Figure 1 of the accompanying Drawing represents in front elevation and edge
view a padlock the case of which is manufactured according to my invention. The
padlock case is made of two halves or blanks each half consisting of a piece a having
the outline of the case, the edge a² being cupped or turned in at right angles to the
part a. Each of the cupped or turned in edges a² is of a breadth equal to one half of
the thickness of the case as represented. The two halves or blanks being placed
together with their concave sides turned towards each other their edges are brought
into contact and the sides of the half cases are thus kept at the required distance apart.
The two parts or halves a, a²; a, a² are then riveted together by the rivets at
and e f g are the pairs of ears of the case. To the pair of ears the bow h of
the lock is jointed by the rivet c which also assists in fastening the two halves of the
case together, the free end of the bow passing between the other pair of ears g.
The rivet d besides serving to rivet the two halves together also serves to hold the
spring of the lock.
d
In making the cupped halves of the case I cut out from strips of sheet iron, steel or
other sheet metal of the breadth represented in Figure 2, or from sheet metal of other
forms, blanks of the kind represented in Figure 3 and afterwards pierce the said
blank with the rivet holes c², d², e². The edges of the blank are next cuppe dor turned
in and at the same time the form of the ears f, gis perfected as represented in
front elevation, edge view and section in Figure 4. The cupped blank or half of the

page_text: case is thereby formed. Two of the said cupped blanks or halves of the case being
taken as represented in Figure 5 their edges are brought into contact and the said
halves riveted together and the padlock case formed as herein before described with
respect to Figure 1.
Having now particularly described and ascertained the nature of my invention
and the manner in which the same is to be performed I declare that I claim as my
invention:-
Manufacturing the cases of padlocks from two cupped blanks or halves of sheet
metal of the kind described and illustrated, the cupped or turned in edges of the
said halves being brought into contact and the said halves rivetted together substan-
tially as herein before described and illustrated in the accompanying Drawing.