Improvements in the Film Operating Mechanism of Apparatus for Taking, Printing, and Exhibiting Series of Photographs.
Year: 1898

page_text: Date of Application, 13th June, 1898
Complete Specification Left 13th Mar 1840 Accented 13th Mov
1800
'.
Date of Application, 13th June, 1898
Complete Specification Left 13th Mar
1840 Accepted 13th May 1800
Improvements in the Film Operating Mechanism of Apparatus for
Taking, Printing, and Exhibiting Series of Photographs.
We, CECIL WRAY, of 80, Grange Road, in the City of Bradford, Electrical
Engineer, and HUMPHERY JAMES OULTON, of 8, Hillside Terrace, Bradford afore-
said, Clock Maker, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in that class of mechanism for inter-
mittently operating the film in apparatus for taking, printing and exhibiting series
of photographs, in which a reciprocating slide is employed having pins or the like
to alternately engage and disengage the perforations in the film to operate it.
To reciprocate the slide we employ a crank the pin of which engages a curved
slot in the side struck with the same radius as the throw of the crank. The
effect of this is that the slide remains stationary during a considerable portion of
the movement of the crank pin whilst the film or picture is exposed."
We employ movable pins in said slide adapted to project into the film guide and
engage the film whilst the slide moves in one direction and be withdrawn there-
from whilst the slide moves in the reverse direction. To impart this movement
to the pins we employ a vibrating piece pivoted to the slide and operated by the
slide crank engaging a fork therein. This vibrating piece has a pallet or incline
on each side arranged to engage similar pallets or inclines on the pin frame and
withdraw the pins. A spring or springs is or are provided to introduce the pins
when the pallets disengage..
To uniformly feed and take up the film and relieve the strain on the perforations
we rest the film rolls upon. unwinding and winding rollers driven at the same
peripheral speed or very nearly the same peripheral speed as the speed the film
is passed through the apparatus. Provision is made for the rise and fall of the
film roller as the diameter varies.
Doted this 11th day of Tune 1808
DRACUP & NOWELL,
Patent Agents, Bradford.
Improvements in the Film Operating Mechanism of Apparatus for
Taking, Printing, and Exhibiting Series of Photographs.
We, CECIL WRAY, of 80, Grange Road, in the City of Bradford, Electrical
Engineer, and HUMPHERY JAMES OULTON, of S, Hillside Terrace, Bradford afore-
said, Clock Maker, do hereby declare the nature of this invention and in what
Price 8d1

page_text: manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
This invention relates to improvements in that class of mechanism for inter-
mittently operating the film in apparatus for taking, printing and exhibiting series
of photographs, in which a reciprocating slide is employed having pins or the like
to alternately engage and disengage the perforations in the film to operate it.
To fully describe our invention reference is made to the accompanying drawings
forming a part of this specification in which similar letters of reference indicate
corresponding parts in each of the figures.
Figure 1, represents a front view of the foundation plate of our improved
apparatus.
Figure 2, is a back view, and
Figure 3, is a side view of the same.
Figures 4 to 9, are separate views of detail hereinafter referred to.
The film guide A is made in the usual way in the front of the foundation
plate A and the pins P for actuating the film project through the slots A3, A3.
The slide B carrying the pins l' works in guides C, C at the back, and is recipro-
cated by the crank pin D engaging the curved slot B³ in the slide. The slot B³
is curved to a portion of a circle struck with a radius the same length as the throw
of the crank, consequently the slide dwells or remains stationary during a con-
siderable portion of the movement of the crank pin and during this stationary
period the picture is exposed opposite the picture aperture A. The crank pin
projects from the disc De fixed on the shaft Ds mounted in the bearing boss E
on the back plate E. The shaft D³ is driven in any convenient manner.
Figures 4 and 5 are two separate views of the slide.
The pins are moveable in the slide 13 and project into the film guide to engage
the film whilst the slide moves downwards and are withdrawn therefrom whilst the
slide moves upwards. To impart this movement to the pins we employ the
vibrating piece pivoted on the stud or pin G on the slide and operated by the
crank pin D engaging the slot F in F. Figures 6 and 7 are two separate views
of the vibrating piece. The pins P project through the slide B and are fixed in
the frame or bridge piece H mounted on the stud Gover F. A spring J secured to F
bears upon the middle of H and tends to press the pins into the film slide. To
withdraw the pins the piece has pallets or inclines F3, F3 which engage the
inclines or pallets H, H when the piece F vibrates, by the motion of the crank
pin D, to the opposite position to that shewn in Figure 2. The pallets passing
behind the bridge piece in this way push it back and thereby withdraw the pins.
Figures 8 and 9 are a plan view and a cross section of H.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
―:
1. In apparatus of the type specified, the means or method of causing a dwell in
the reciprocation of the slide, substantially as herein shewn and described.
2. The combination with the slide B carrying pins P, of the vibrating piece F,
having pallets adapted to withdraw said pins to disengage them from the picture
film, substantially as herein shewn and described.
Dated this 11th day of March 1899
DRACUP & NOWELL,
Patent Agents, Bradford.