IMPROVEMENTS IN THE MANU- FACTURE OF DOOR AND OTHER BOLTS
Year: 1877

page_text: LETTERS PATENT to Jonah Banks, of Willenhall, in the County of Stafford,
Door Bolt Manufacturer, for the Invention of "IMPROVEMENTS IN THE MANU-
FACTURE OF DOOR AND OTHER BOLTS."
PROVISIONAL SPECIFICATION left by the said Jonah Banks at the Office
of the Commissioners of Patents on the 11th December 1877.
JONAH BANKS, of Willenhall, in the County of Stafford, Door Bolt Manufacturer.
"IMPROVEMENTS IN THE MANUFACTURE OF DOOR AND OTHER BOLTS."
My Invention has reference to door and other bolts of the kind called "tower
bolts," and also to those called barrel bolts.
In tower bolts the bolt proper slides in two (or more) semicircular bands,
commonly called staples, fixed some distance apart on the fixing plate of the bolt;
and in barrel bolts, the bolt proper slides in a continuous tube or barrel fixed on the
plate of the bolt. The said semicircular bands or staples and barrels are made from
sheet metal, and are ordinarily connected to the plate of the bolt by rivetting.
My Invention consists in connecting the said semicircular bands or staples and
barrels to their plates in the manner herein-after described, whereby the ordinary
rivetting process is dispensed with, and economy in time and labour is effected.
I will first describe my Invention as applied to the manufacture of a “tower
bolt.
"
I form, by stamping from sheet iron, staples having the general figure of the
letter U, each staple consisting of two parallel parts or sides connected together by
a semicircular junction. The bottom or base of each of the parallel parts or sides
of the staple is contracted in length, and from these contracted parts the fixing
wings or flanges of the staple, herein-after described, are made. In the plate of the
door bolt, at the part where the staple is to be fixed, two parallel slits or piercings
are made at a distance apart equal to the width of the staple, and of a length equal
to the length of the contracted parts of the staple. The base parts of the parallel
Price Gd1

page_text: sides of the staple are passed from the front of the plate through the parallel
piercings in the said plate, the shoulders of the staple, where the contracted parts
set in, abutting against the plate. The contracted ends of the staple projecting
from the back of the plate are next opened out or separated so as to make them
incline from one another, and by the action of a pair of dies worked in a press or
stamp, the said projecting contracted ends of the staple are bent or folded in
opposite directions and closed upon the back of the plate, thereby forming wings or
flanges at the base of the staple.
The dies which effect the bending or folding of the wings or flanges upon the
back of the plate also at the same time form in the under side of the bolt plate
recesses or depressions, into which the wings or flanges of the staple are forced.
The staple is thus secured very firmly to the bolt plate, the fixing wings or flanges
of the staple being situated flush with the under side of the bolt plate
In order to further insure the fasteuing of the staple to the plate, the screw
holes used for fastening the bolt to the door are punched through the flanges
or wings of the staple, so that when the bolt is fastened to a door, the screws
not only pass through the fixing plate but also through the wings or flanges of
the staple.
All the staples are secured to the plate in the manner described.
In fixing the barrels of barrel bolts to their plates, according to my Invention,
I form a trough picce of the length of the barrel, and provide it with reduced base
parts, and I pierce in the bolt plate two parallel piercings to receive the contracted
base parts of the trough piece or barrel. I then bend or fold and close the pro-
jecting base parts of the barrel upon the back of the plate and flush with the said
back in the manner described with respect to the staple of a tower bolt.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Jonah Banks in the Great Seal Patent Office on the 31st May
1878.
JONAH BANKS, of Willenhall, in the County of Stafford, Door Bolt Manufacturer.
"IMPROVEMENTS IN THE MANUFACTURE OF DOOR AND OTHER BOLTS.'
My Invention has reference to door and other bolts of the kind called "tower
bolts," and also to those called barrel bolts.
In tower bolts the bolt proper slides in two (or more) semicircular bands,
commonly called staples, fixed some distance apart on the fixing plate of the
bolt; and in barrel bolts, the bolt proper slides in a continuous tube or barrel
fixed on the plate of the bolt The said semicircular bands or staples and barrels
are made from sheet metal, and are ordinarily connected to the plate of the bolt by
rivetting.
My Invention consists in connecting the said semicircular bands or staples and
barrels to their plates in the mannor horein-after described, whereby the ordinary
ivetting process is dispensed with and economy in time and labour is effected
My Invention may also be applied to the connecting of the cheeks of the bolt to
the bolt plate.
I will first describe my Invention as applied to the manufacture of a
bolt.
tower"
I form, by stamping from sheet iron, staples having the figure of the letter U,
each staple consisting of two parallel parts or sides connected together by a semi-
circular junction. The bottom or base of each of the parallel parts or sides of the
staple is contracted in length, and from these contracted parts the fixing wings or
flanges of the staple, herein-after described, are made. In the plate of the bolt at
the part where the staple is to be fixed, two parallel slits or piercings are inade at
a distance apart equal to the width of the staple and of a length equal to the
length of the contracted parts of the staple. The base parts of the parallel sides of
the staple are passed from the front of the plate through the parallel piercings in
the said plate, the shoulders of the staple, where the contracted parts set in, abutting
against the plate. The contracted ends of the staple projecting from the back of the
plate are next opened out or separated so as to make them incline from one another,
and by the action of a pair of dies or tools worked in a pross or stamp, the said
projecting contracted ends of the staple are bent or folded in opposite directions and
close upon the back of the plate, thereby forming wings or flanges at the base of
the staple.
The dies or tools which effect the bending or folding of the wings or flanges upon
the back of the plate, also at the same time form in the under side of the bolt plate
recesses or depressions, into which the wings or flanges of the staple are forced.
The staple is thus secured very firmly to the bolt plate, tho fixing wings, or flanges
of the staple being situated flush with the under side of the bolt plate.
In order to further ensure the fastening of the staple to the plate, the screw holes
used for fastening the bolt to the door are punched through the flanges or wings of
the staple, so that when a bolt is fastened to a door, the screws not only pass through
the fixing plate, but also through the wings or flanges of the staple.
All the staples and the cheeks are secured to the plate in the inanner described.
I fix the barrels of barrel bolts to their plates in the manner described with
respect to staples and cheeks.
I will now describe, with reference to the accompanying Drawing, the manner
in which my Invention may be performed.
Figure 1 represents in plan of upper side a tower bolt, the semicircular bands or
staples and cheeks or open staples of which are connected to the bolt plate according
to my Invention.
Figure 2 represents in plan of upper side, and Figure 3, in end elevation, the
same without the sliding rod or bolt.

page_text: Figure 4 represents a plan of under side, and Figure 5 a cross section of the bolt
plate and parts carried by it; and Figures 6 and 7 represent the same before the
staples and cheeks are connected to the bolt plate.
The other Figures represent parts of the bolt, as heroin-after described.
In the several Figures of the Drawing, the bolt plate is marked a, the semi-
circular bands or staples in which the bolt b slides are marked c, c, and the cheeks
against which the handle end of the bolt b is turned to fasten and unfasten the bolt
are marked d, d.
The staples c, o, are made by cutting from sheet iron blanks of the form represented
in Figure 9, and, by a stamping process, raising the said blanks into the figure of
the letter U, as illustrated in Figure 10.
The ends c, c, of the blanks c, c, from which the base parts of the parallel sides
of the staples c, c, are made, are contracted or are of less width than the other parts,
the said contracted ends c³, c, forming fixing wings or flanges for connecting the
staples to the plate as herein-after described.
The cheeks d, d, are made from the blanks represented in Figure 11. These
blanks are slightly curved or bent, as shewn at d, d, Figure 3, and have contracted
ends ², d³, for forming the fixing wings or flanges. The bolt plato a is represented
separately in plan and edgo view in Figure 8. In the said plate two pairs of
parallel slits or piercings e, e, are made at the parts where the staples c, c, are to be
fixed, and a similar pair of slits or piercings f,f, is made in it where the cheeks d, d,
are to be fixed.
In fixing the staples c, c, and cheeks d, d, to the plate a, the base parts c², c², c²,
are passed from the front of the plate through the parallel piercings of the shoulders
of the said parts o, c, d, where the latter join the other parts c, d, abutting against
the plate a, as illustrated in side elevation in Figure 12, and end elevation in
Figure 13.
Having arranged the staples and cheeks c, d, in the plate a, as illustrated in
Figures 12 and 13, the partly made bolt is placed in the lower die or tool of a pair
of tools worked in a press or stamp, and a wedge-shaped hand tool being placed
upon the projecting parts c², c, d, projecting from the back of the plate a, the top
die of the stamp is allowed to fall on the said hand tool, and the said parts c², c², &²,
are thereby opened out or separated so as to make them incline from one another,
as illustrated in plan of under side in Figure 6, and cross section in Figure 7. The
hand tool being removed, the top die is allowed to fall on the inclined parts c, c², d².
By the second descent of the top die, the staples and cheeks c, d, are bent or folded
in opposite directions and closed upon the back of the plate a, thereby forming
wings or flanges marked c², d², at right angles to the said staples and cheeks at the
back of the said plate a, as illustrated in Figures 4 and 5. The staples and cheeks
are thus firmly secured to the plate without rivetting
The lower or fixed die of the pair of closing dies or tools has recessos in it corre-
sponding in shape to the flanges or wings c, d, and by the operation of the said
tools during the bending and closing of the flanges c, d, upon the back of the
plate a, the metal of the plate and wings is forced into the depressions in the lower
die, and the fixing wings or flanges c², d², are thus brought flush with the under side
or back of the bolt plate.
The recesses formed in the under side of the bolt plate into which the fixing
wings are forced, are best seen in the cross section of the partly made bolt,
Figure 5, and are marked g. The said recesses g are also represented in Figures 1,
2, and 3.
To effect the more secure fastening of the staples c, c, to the plate a, holes i, i,
(see Figure 1) are punched through the flanges or wings c², c, and plate a, through
which holes i, i, the screws used to fasten the bolt to the doors or other article are
passed. By this means the fastening screws not only pass through the fixing plate a
but also through the wings or flanges c², c², of the staples.
For greater security, the flanges or wings d², d², of the cheeks d, d, may be

page_text: riverted in their prices by rivers,, (Figure 1) passed through them and the said
fixing plate.
I do not however confine myself to the fastening of the cheeks d, d, by rivetting,
as by the action of the closing dies or tools the metal at either side the slits or
piercings in the plate a, through which the wing parts d², d², are passed, may be
compressed so tightly on the said wing parts as to render any other fastening
unnecessary.
In fixing the barrels of barrel bolts to their plates, according to my Invention, I
form a trough piece of the length of the barrel and provide it with reduced base
parts, the said barrel having the sectional form represented in Figure 10, and I
make in the bolt plate a two parallel piercings to receive the contracted base parts
of the trough piece or barrel; I then bend or fold and close the projecting base
parts of the barrel upon the back of the plate and flush with the said back, in the
manner described and illustrated with respect to the staples and cheeks of a tower
bolt.
The cutting out and shaping and bending or closing tools which I employ in
carrying my Invention into effect are of the kind commonly used in cutting out,
shaping, and bending metals for other purposes, and I therefore do not consider it
necessary to describe the said tools.
Having now described the nature of my Invention and the manner in which the
same is to be performed, I wish it to be understood that I claim as my Invention,
the improvements in the manufacture of door and other bolts, herein-before
described and illustrated in the accompanying Drawing, that is to say, con fecting
the staples or semicircular bands and cheeks of tower bolts and the barrels of barrel
bolts to the plates of the said bolts by forming at the bottoms or bases of the said
staples, cheeks, and barrels, contracted parts, from which fixing wings or flanges
are made; passing the wing or flange parts through parallel slits or piercings in the
bolt plate and bending or folding and closing by the operation of press tools, as
described, the said wing or flange parts upon the back of the said plate, the said
bent, folded, or closed wing or flange parts being forced into recesses or depressions,
made by the operation of the closing tools on the under side of the bolt plate so as
to bring the fixing wings or flanges flush with the under side of the said bolt plate,
substantially as described and illustrated.
In witness whereof, I, the said Jonah Banks, have hereunto set my hand
and seal, this Thirtieth day of May, in the year of our Lord One thousand
eight hundred and seventy-eight.
Witness,
DANIEL THOMPSON,
Willenhall
JONAH BANKS. (L.S.)