Improvements in Apparatus for Taking and Exhibiting Kinetoscopic Films or Animated Photographs.
Year: 1897

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883) as required by
the decision of the Comptroller General of the 13th day of July 1898.
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Taking and Exhibiting Kinetoscopic
Films or Animated Photographs.
We, CECIL WILLIAM BAXTER and CECIL WRAY, of the Firm of Baxter & Wray,
of Borough Mills, Manchester Road, Bradford, in the County of York, Electrical
Engineers, and JOSEPH OULTON, of 8, Hill Side Terrace, Bradford aforesaid, Clock
Maker, do hereby declare the nature of this invention to be as follows:-
-
This invention relates to improvements in that class of apparatus for inter-
mittently operating films for taking and exhibiting kinetoscopic pictures or
animated photographs in which the film is operated by pins fixed to a recipro-
cating slide which pins engage perforations in the film when moving in one
direction and are disengaged therefrom during the reverse stroke.
Our improvements consist in employing pawls or catches in place of said pins.
These pawls or catches are hinged or pivoted to the reciprocating slide and their
ends or teeth engaging the perforations in the film ure ratchet shaped or of such a
form and the pawls are pivoted in such a way that in the reverse stroke of the
said slide they automatically slip out of the perforations. A light spring is
pivoted to press the teeth back into the perforations at the commencement of
the next stroke.
To prevent any liability of the said teeth drawing the film backwards instead
of disengaging it a pawl or catch or pawls or catches may be provided to hold
the film stationary during the reverse movement of the said slide. These latter
pawls or catches are pivoted to a fixed part of the mechanism and are so formed
and arranged that they oppose little or no resistance to the forward movement
of the film but prevent any backward movement.
To rapidly operate the picture film and instantaneously change the picture we
may move the said slide in the direction required to move the film by means of
a spring and employ a "snail" cam to move it in the reverse direction The
snail may have a "dwell" at each end to allow time for the pawls or catches
to engage and disengage the perforations in the film.
Dated thin 5th day of 1907
DRACUP & NOWELL,..
Patent Agents,- Bradford..

page_text: Improvements in Apparatus for Taking and Exhibiting Kinetoscopic
Films or Animated Photographs.
We, CECIL WILLIAM BAXTER and CECIL WRAY, of the Firm of Baxter & Wray,
of Borough Mills, Manchester Road, Bradford, in the County of York, Electrical
Engineers, and JOSEPH OULTON, of 8, Hill Side Terrace, Bradford aforesaid, Clock
Maker, 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 relates to improvements in that class of apparatus for inter-
mittently operating films for taking and exhibiting kinetoscopic pictures or
animated photographs in which the film is operated by pins fixed to a recipro-
cating slide which pins engage perforations in the film when moving in one
direction and are disengaged therefrom during the reverse stroke.
Our improvements consist in employing pawls or catches in place of said pins.
These pawls or catches are hinged or pivoted to the reciprocating slide and their
ends or teeth engaging the perforations in the film are ratchet shaped or of such a
form and the pawls are pivoted in such a way that in the reverse stroke of
said slide they automatically slip out of the perforations. A light spring is
provided to press the teeth back into the perforations at the commencement of
the next stroke.
To prevent any liability of the said teeth drawing the film backwards instead
of disengaging it a pawl or catch or pawls or catches may be provided to hold
the film stationary during the reverse movement of the said slide. These latter
pawls or catches are pivoted to a fixed part of the mechanism and are so formed
and arranged that they oppose little or no resistance to the forward movement
of the film but prevent any backward movement.
•
To rapidly operate the picture film and instantaneously change the picture we
may move the said slide in the direction required to move the film by means of
a spring and employ a snail" cam to move it in the reverse direction The
snail may have a "dwell" at each end to allow time for the pawls or catches
to engage and disengage the perforations in the film.
To fully describe our invention reference is made to the accompanying sheet of
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 a film exhibiting apparatus.
Figure 2, is a similar view with the plate covering the film passage removed.
Figure 3, is a back view of Figure I with the back plate and certain internal
parts omitted in order to show the reciprocating slide in full.
Figure 4, is a section of the same on the broken line a, b.
Figure 5, is a separate view on a larger scale of the reciprocating slide; and
Figure 6, is a side view of the same.
Figures 7 and 8 are a side view and a front view of one of the said pawls or
catches.
Figure 9, is a vertical section illustrating the application of check pawls to
prevent the upward movement of the film.
Figure 10, is a similar view to Figure 3 showing the application of a snail
cam and spring for operating the slide.
Figure 11, is a vertical section of the same on the broken line 3, 2.
A groove forming the film passage A is made down the front plate A² of the
apparatus and this groove is covered by a plate B mounted on the pins A³ and
pressed inwards by the four springs A. The film is passed down between the

page_text: back of the groove A and the plate B and the pressure of the latter upon it may
be sufficient to stop any upward movement of the film when the apparatus is in
operation, a picture opening C is made through the plates A and B.
The slide D which can be reciprocated by a crank pin engaging the groove Do
is mounted in the vertical groove A5 formed in the back of the plate A and is
secured therein by the guide strips Aº, A°. Slots A7, A7 are made through the
plate A and the teeth E on the pawls or catches E project through these slots
into the film passage and engage the usual perforations formed along the edges
of the film. The pawls E are pivoted by the pins E³ between the lugs D³
formed on the slide D and they project through slots made in the slide. Light
springs F fixed to the slide D bear upon the pawls and press them towards the
film passage.
As the pins lie a suitable distance behind the film passage and the teeth E
are ratchet shaped that is to say; their upper faces are inclined downwards
towards the film passage the teeth readily become disengaged from the film as
the upward movement of the slide commences. Grooves are made in the back
of the plate B opposite the slots A' for the ends of the teeth passing through
the film to project into.
A pawl H Figure 9 pivoted to the lug H on the plate A is provided imme-
diately beneath each of the pawls E. The pawls H readily allow the picture
film to pass down but by engaging the perforations in the film prevent it being
drawn back by the upward movement of the pawls E.
In Figures 10 and 11 the snail cam J, fixed upon the rotary shaft Ja, is
employed to raise the slide D. For this purpose the pin or stud N is provided
on the slide D to engage the periphery of the snail. To quickly pull the slide
down the spring R is used. This spring is stretched between the stud R in the
plate A and the end V of the lever V2 pivoted on the end of the stud V³ in the
plate A The other end V of the lever has a projecting pin V5 which engages
a slot Voin the slide D to operate it.
It is obvious that the improvements are equally applicable to apparatus for
taking series of photographs on films.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that we are
aware that it has previously been proposed to provide means which while allow-
ing of sufficient backward movement of the film for accurately registering it; pre-
vent further backward motion, and we make no claim to such invention, but
what we claim is:-
1. In apparatus for taking and exhibiting a series of photographs on continuous
films, a reciprocating slide carrying two pawls one on each side to engage the
side perforations of the film, substantially as herein shown and described and
illustrated in the accompanying drawings.
2. In apparatus for taking and exhibiting a series of photographs on continuous
films, the combination of the pawls E with the pawls H, substantially as herein
shown and described and illustrated in the accompanying drawings.
3. In apparatus for taking and exhibiting a series of photographs on continuous
films, a reciprocating slide or its equivalent adapted and arranged to be moved
in one direction by a snail cam and in the reverse direction by a spring to operate
the film, substantially as herein shown and described and illustrated in the accom-
panying drawings.
Dated this 4th day of February 1898.
DRACUP & NOWELL,
Patent Agents, Bradford.