Improvements in Apparatus for Driving Tacks.
Year: 1896

page_text: Date of Application, 10th Jan., 1896
Complete Specification Left, 9th Oct., 1896-Accepted, 14th Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Driving Tacks.
I WILLIAM HENRY DORMAN, of The Hawthorns, Newport Road, Stafford,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention is an improvement on that described in the Specification of
former Letters Patent granted to me dated A.D. 1893 and numbered 19,318.
Hitherto the movement of the driving bar has been limited to the proper amount
by causing the underside of its knob to be arrested by striking on the upper end
of the case and when any portion of the hand of the operator has incautiously been
allowed to intervene it has received injury thereby.
To avoid this I limit the movement by causing the bar to strike at its lower end
within the case and I shorten the body or lengthen the driver bar so as to afford
clearance.
I also mount the retaining claw in a special carrying piece let into the ordinary
block so that the piece can be easily replaced by a new one when worn and the
surface of this piece and of the retaining claw finish level together so as to
form a die surface on which the driver can cleanly punch out the tack together
with a punching of the strip, leaving no portions of the strip behind to clog the
apparatus.
1 also alter the form of the end of the retaining claw so that when closed it
forms perfectly a portion of the side of the die through which the driver operates.
The upper end of the nozzle which previously formed the die I now remove and
make simply a plain short nozzle which can be renewed at much less expense than
the former one.
Doshi och Jon of Inc
COMPLETE SPECIFICATION.
Improvements in Apparatus for Driving Tacks.
I, WILLIAM HENRY DORMAN, of The Green Hall, Stafford, formerly of The
Hawthorns, Newport Road, Stafford, aforesaid, Engineer 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 applies to hand tackers made to work with tacks carried in strips
of paper and is an improvement on that described in the Specification of former
Letters Patent granted to me dated 14th October 1893 and numbered 19,318 and
is illustrated by the accompanying drawings Figs. 1 to 6.
Hitherto the movement of the "driver bar d" Fig. 1. has been limited to the
proper amount by causing the underside of its "knob e" to be arrested by striking
on the upper end of the "case a" and when any portion of the hand of the
operator has incautiously been allowed to intervene it has received injury thereby.
To avoid this I limit the movement by causing the "bar d" to strike at its lower
end d' within the "case" at a' and I shorten the "case a" or lengthen the "driver
bar d" so as to afford clearance.

page_text: The "retaining claw" t has hitherto been mounted in the "block and
when so constructed it has been difficult to fit up the parts accurately on account
of the depth and narrowness of the space and furthermore when the parts
adjacent to the claw have become worn the whole "block" has had to be thrown
away. To remedy this I improve the construction by mounting the "retaining
claw", Figs. 2. 3. 4. 5 and 6 in a special carrying piece t let into the "block" z¹
and I make the surface of the piece t and the surface t of the "retaining
claw" finish level together so as to form a die surface on which the "driver c
can cleanly punch out the tack together with a punching of the "strip" leaving
no portion of the "strip" behind to clog the apparatus.
I also alter the form of the end of the "retaining claw" so that when
closed it forms perfectly a portion of the side of the die through which the
"driver" c operates.
The upper end of the nozzle which previously formed the die I now remove and
make simply a plain short nozzle w' as shewn in Figs. 1. 2 and 6, which can be
renewed at much less expense than the former one.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
In a tack driving apparatus of the kind herein referred to :-
1. Providing a clearance between the underside of the knob e and the upper end
of the case a, for the purpose of avoiding risk of injury to the hand of the operator
substantially as described.
2. Constructing the retaining claw in the manner described and mounting it
in a special carrying piece t let into the block x'.
3. Forming the nozzle w¹ as described and illustrated in Figs. 1. 2 and 6.
Dated this 8th day of October 1896.
W. H. DORMAN.