AN IMPROVED METHOD OF MANUFACTURING BRASS BOLTS OF VARIOUS DESCRIPTIONS
Year: 1884

page_text: I JAMES RHODES of 65 Larcher Street Sparkbrook Birmingham in the County
of Warwick Brassfounder do hereby declare the nature of my said invention for
AN IMPROVED METHOD OF MANUFACTURING BRASS BOLTS OF VARIOUS DESCRIPTIONS
to be as follows:-
My invention consists of manufacturing brass bolts wether flush or projecting,
by an improved method, I cause the metal to be drawn in strips the required shape
& then cut into lengths according to size of bolts I next cause the lengths to be
sloted by means of pearcing or circular cutters, I now cause a metal back to
be attached to the aforesaid lengths by means of eyelets through the ordinary
countersink holes to this back is attached by rivita angle-peices that cover the
cavity in the projecting bolt. When the bolt is required flush a metal box is
applied to drawn metal sloted to recieve thumpiece and to form a stop for shoot
using the usual thumpiece slide and spring.
The flush bolt is made in the following manner.
From a strip of brass drawn to the shape of the section A as shown in the
accompanying drawing, the length necessary for making the bolt is cut off and
bent & slotted in a press, as shown at B.
The piece C also shaped & slotted in a press is fastened on under the slot in B
and thus forms a box in which the thumb piece D works.
I also insert in the bottom of this box a sliding piece, of brass E to cover the slot
in C and give the bolt a better appearance.
The iron shoot F. is now put in position and the shank of the thumbpiece D is
passed through the hole shown in E and through a corresponding hole in the end of
shoot F and is securely riveted to the latter.
A steel spring G is fastened to the under-side of B which presses on the shoot
and ensures its working steadily.
The striking plate for receiveing the shoot is also made from drawn brass.
The projecting bolt (commonly called socket bolt) is made in the following
manner.
From a strip of brass drawn to the shape of the section shown at H. in the
accompanying drawing the length necessary for making the bolt is cut off and
[Price Bill

page_text: perforated as shown at I. This perforation is made with either press tools or
circular cutters.
The back plate is made of iron and is shown at J.
Angle pieces K & L are riveted on to the back plate and form the ends of the
bolt.
A steel spring similar to that used in the flush bolt and shown at Ġ. is also
riveted on to the back plate so as to press on the shoot M & ensures its working
steadily.
The shoot M is now placed in position and the front plate I. and back plate J
are fastened together by means of eylets shown at N which are passed through
the holes marked n, and riveted over so as to form the screwholes necessary for
fixing the bolt when complete.
I also connect the front and back plates by another process which is as follows,
The holes having been punched in the back plate J. the front plate I. is placed in
position and the holes are punched in it in such a manner that the metal displaced
is forced through the holes in back plate and riveted over.
When the two plates are fastened together the ends are shaped by means of
press tools.
The socket end to receive the shoot of bolt is made in precisely the same manner
as above described.
The above methods of construction enables me to manufacture the bolts out of
drawn brass strips instead of castings as hitherto and thus effects a great saving in
the cost of labour as very little filing is required.

page_text: COMPLETE SPECIFICATION.
I JAMES RHODES of Larcher Street Sparkbrook Birmingham do hereby declare
the nature of said invention for "AN IMPROVED METHOD OF MANUFACTURING BRASS
BOLTS OF VARIOUS DESCRIPTIONS" and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:―
My invention has for its object principally to simplify the manufacture or
production of door and other bolts for various purposes such as socket bolts,
barrel bolts and bolts for French and other casements.
Instead of making the said bolts by casting as is commonly practiced I produce
them essentially from drawn or rolled sheet metal, which is cut into suitable lengths
and the requisite slots and shape given by tools and pressure; and my said
invention consists principally in forming the barrel and plate part from one piece
of sheet metal, which constitutes the barrel and front of the bolt. The back or
base plate is cut from flat or other sheet metal and attached to the front part
preferably by eyeleting which forms the countersunk screw holes for the bolts
attachment.
By my invention the manufacture or production of the said bolt is much
simplified and economized.
For convenience of description I will first describe my invention as applied to an
ordinary door or socket bolt.
Figure 1 of the accompanying drawing is a front elevation, figure 2 is a side
elevation, and figure 3 is a longitudinal vertical section of a door bolt and a socket
or staple end made according to my invention. Figure 4 is an end view of the
staple end of the bolt-Figure 5 is an end view of the other or slotted end of the
bolt, and figure 6 is a cross section on the dotted lines A B figure 3.
I take a length of drawn or rolled sheet metal figure 7 of the cross section shown
at figure 74 and from this length of drawn metal, I cut off a suitable length
marked a a² which is to form the bolt and a shorter length 6 62 for the socket or
staple end, and by press or other tools I shape the blank a a³ into the form as
represented in figure 8, and the blank b b into the shape as represented in figure 9.
Screw holes c c are then pierced through the flats or sides of the bolt and the
T ended opening b figure 10 is gapped or slotted in the barrel or arched part. This
opening is for the neck of the knob at the end of the shoot to work in; and to the
under side of the combined barrel and plate figure 10, I attach the base plate e
figure 11 having rivetted or attached to it the angle end pieces fg. These end or
angle pieces enclose or partially enclose the respective ends of the barrel of the
bolt Figure 12 shows a front elevation of the end g which encloses the socket end
of the bolt, while the end f which encloses the slotted end is represented at
figure 13. A similar end also encloses the socket or staple end and marked f
The base plate for the socket or staple is marked e³.
The base plate e is attached or secured to the barrel and front part a a² by
eyelets h passing through the coincident holes ces which said eyelets are clenched
or thrown over on the underside of the back plate, and best seen in figures 3 and 6,
.

page_text: These eyelets are so shaped that they follow the countersink of the bolt, and they
have all the appearance of an ordinary countersunk hole; and it will be seen that
the barrel enclosing angle pieces are principally attached to the under plate also by
eyelets, in the same way as the said under plate is attached to the bolt front-i is
the shoot of the bolt, j is a spring acting on the underside of the shoot for
. preventing the shoot from rattling and keeping it in its place.
The attachment of the under or base plate to the front of the bolt may be
effected by bulging the metal of the screw holes downwards into the form of a
solid eyelet or neck which is closed on the underside, thus attaching securely the
two parts together, as best seen in the enlarged cross section as represented in
figure 14. Or the plate may be attached by drawing the edges of the bolt into
undercut or V grooves and sliding the under plate longitudinally therein as
represented in figure 15-Figure 16 represents a chain bolt constructed according
to my invention, produced in the same manner as the bolt represented in figure 1.
The bolts if necessary may be used without the under plate and in this case no
eycleting or rivetting is required as the suitably shaped and gapped section
figure 8 is placed directly upon a door or other object and the affixing screws passed
through countersunk holes in the ordinary way.
The application of my invention to casement and other bolts for various purposes
differs in no essential respect from its application to a door bolt or a chain bolt as
herein before described.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
First. The improvements in the manufacture or production of door and other
bolts for various purposes herein before described and illustrated in the accom-
panying drawing; that is to say, producing bolts or bolt casings and sockets or
staple ends for bolts, from drawn or rolled metal of the cross section a a³ figure 7ª
or a like modification thereof, with gapped or slotted openings and cut away parts,
substantially as described and set forth.
Secondly. The manufacture or production of door and other bolts or bolt casings
and socket ends for bolts, from a length of drawn, rolled or shaped metal, properly
slotted and formed, and a base plate, which is subsequently attached to the front
casing or shaped section by eyeleting or rivetting; also the angle pieces for filling
up the ends of the bolt casings or sockets The manufacture being conducted and
carried out in the way substantially as described and illustrated.
Thirdly. Attaching or connecting together the parts of bolt casings or bolt
Bockets by eyelets / substantially as described and illustrated; also the modi-
fications described and represented in figures 14 and 15 of the drawing.
Fourthly. The general arrangement or combination of the parts of bolts and bolt
sockets substantially as described and set forth.