An Improved Exhibiting Apparatus.
Year: 1898

page_text: Date of Application, 13th Apr., 1898-Accepted, 26th July, 1898
COMPLETE SPECIFICATION.
An Improved Exhibiting Apparatus.
I, ELMER ZEBLEY TAYLOR, of 4130, Pengrove Street, Philadelphia, in the State
of Pennsylvania, United States of America, Civil 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:.
The object of my invention is to provide an exhibiting apparatus in which a
plurality of curtains provided with suitable wording, designs or other matter, may
be automatically successively brought to view.
The device of this invention is fully shown and described in the following
specification, of which the accompanying drawings form a part, wherein
Figure 1 is a front view of my improved form of exhibiting apparatus, the lower
portion of the casing being partially broken away in order to show the motor and
gearing located in the lower part of the casing; Figure 2 is a side view of the
construction shown in Fig. 1 looking to the left in the direction of the arrow, and
on the line yy of Fig. 1; Figure 3 is a front view on an enlarged scale of the
sector-gear, ratchet and pawl devices, sprocket-chain, combined cam and gear-
wheel, motor-snaft and endless gearing for rotating the roller or drum; and
Figure 4 is a top plan view of the mechanism shown in Figure 3; Figure 5 is a
view on an enlarged scale, of the pawl and ratchet device shown in Figs. 3 and 4,
looking in the direction of the arrow in Fig. 3, the sprocket-wheel having been
removed and Figure 6 is a view of Fig. 5 looking from the left and in the direc-
tion of the arrow shown in such Fig. 5; Figure 7 is an enlarged view in detail
of my improved form of roller or drum showing the manner of attaching the
curtains thereto; and Figure 8 is a view in detail of one of the rods of such roller.
or drum to which the curtains are attached: Figure 9 is a rear view of the upper
portion of the apparatus, the back of the casing being removed; and Figure 10
is a top plan view thereof, the top of the casing having been removed to show
the interior mechanism; Figure 11 is a view on an enlarged scale of the left hand
end of the roller or drum, showing the regulating device; and Figure 12 is a
side view of the right hand end of the roller or drum showing one of the endless
retaining bands, and the position of the curtains; Figure 13 is a side view on an
enlarged scale of the regulator shown in Fig. 11 in the wound-up position; and
Figure 14 is a like view of such regulator in the unwound position; and
Figure 15 is a view on an enlarged scale of the motor shaft, sector-gear and pawl
and ratchet devices and gearing connecting the same with the roller or drum, of
a modified form of the construction 'shown in Figs. 1, 2, 3 and 4. in which the
sprocket-wheel and chain are omitted and gear wheels substituted therefor.
Figure 16 is a front view of another modified form of construction from that
shown in the preceding figures: Figure 17 is a side view in elevation of the con-
struction shown in Fig. 15, looking from the right in the direction of the arrow,
the side of the casing being removed to show the mechanism; Figure 18 is a side
view of a portion of such construction in detail on an enlarged scale; Figure 19

page_text: is a side view in detail on an enlarged scale of the mechanism shown in Fig. 18
looking from the right in the direction of the arrow shown, and Figures 20, 21
and 22 are views in detail of various portions of the sprocket-chain, shown therein.
Figures 23, 24, 25 and 26 are diagrammatic side views of the curtain-carrying
roller or drum and the actuating mechanism of this form of the device, showing
the position assumed by the curtains and operating mechanism, at various positions
of the actuating triple sprocket-chain.
Figure 27 is a front view of another modified form of my exhibiting apparatus.
Figure 28 is a side view thereof looking from the right of Fig. 27, with the end
of the casing removed. Figure 29 is an end view on an enlarged scale of the
curtain-carrying roller or drum of such form and the mechanism actuating the
same. Figure 30 is a side view looking from the left of Fig. 27 of that portion
of the mechanism shown therein. Figure 31 is a view of Fig. 30 in central
vertical section on the line Y-Y of Fig. 29; and Figures 32 to 37 inclusive are
diagrammatic views, showing two series of curtains carried by the roller or drum,
the ends of one series being staggered to the other, the curtains being shown in
various positions.
Figure 38 is a front view of another modified form of my exhibiting apparatus ;
Figure 39 is a side view thereof looking from the right of Fig. 38 with the end
of the casing removed. Figure 40 is a view in detail on an enlarged scale of the
drum and operating mechanism looking from the right of Fig. 38; and Figure 41
is a view of the mechanism shown in Fig. 40, looking to the left thereof.
Figure 42 is a view in detail of the mechanism shown in Figs. 38 to 41 showing
the upper end of the rod carrying the rack-gear and of the spur-gear
wheel actuated by such rack-gear showing the dwell-stop. in
with the lower dwell-face or stop of such rod; and Figures 43, 44, 45 and 46 are
diagrammatic side views of the curtain-carrying roller or drum its operating
mechanism and rod, showing the various parts in various positions assumed by
them during operation.
contact
Referring to the drawings: The reference letter A designates a suitable support
or casing, generally of wood, consisting of a back 1 side pieces 2, bottom 3 and
top 4, and glass front 5. Secured to the side pieces 2 of the casing 1 are suitable
bearings 6 (Figs. 9 and 10) which revolubly support a shaft 7, and rigidly secured
to the shaft 7 is a roller or drum B. This roller or drum B, I prefer to make of
the improved form of my invention shown in detail in Figs. 7 and 8, wherein it con-
sists of two end pieces or wheels 8, formed preferably of cast iron, each provided
with suitable mortices or holes 9, and of a central wooden center piece or wheel 10,
which with the wheels 8 is rigidly secured upon the shaft 7. Secured to wheel 10
by screws 11 are a plurality of rods 12 chamfered, as shown at 13 and 14 in
Tigs. 7 and 8, so as to fit snugly.in the mortises or holes 9 of the wheels 8, the
chamfers 14 being longer than the chamfers 13 to allow of removal of such rods
To cach of these rods 12, is attached a curtain C, and by this arrangement, the
curtains being of equal length, when wound upon the roller or drum B the ends
of such curtains will overlap and extend one beyond the other.
Rigidly mounted upon the shaft 7 (Figs. 2, 9, 10 & 12) is a sprocket-wheel 15
around which passes an endless sprocket-chain 16 which also passes around a like
sprocket-wheel 17; such sprocket-chain 16 preferably having its tension regulated
by a suitable adjustable idler-pulley 18, as shown in Fig. 2.
As shown in Figs. 3 and 4 the sprocket-wheel 17 is rigidly secured to a toothed
wheel D, and the two are revolubly and loosely mounted upon a short shaft 19
revolubly mounted in a suitable bearing 20. Rigidly secured to the inner end of
the shaft 19 is a suitable small gear-wheel or pinion 21, preferably of bevel-face,
meshing with a sector-gear 22 vibrating upon a pivot 23. This sector-gear 22 is
provided with a backwardly extending portion 23ª provided at the end with a
cam-pin 24, which rests in the cam-way 25 of the cam-wheel 26 which is provided
with the spur-gear teeth 27. The spur-gear 27 meshes with the smaller gear-
wheel 27 which is rigidly secured to the short shaft 28, upon which is also

page_text: rigidly mounted the spur-gear wheel 29 which is actuated by an endless screw 30
which is rigidly secured to the main shaft 31 which is in turn operated by the
inotor E.
The bearings of the shafts carrying the wheels 21, 26, 27 and 29 are preferably
formed in and integral with a suitable cruciform-shaped supporting frame F,
to which is bolted the journal-box 32 supporting the endless screw 30 carried by
the motor shaft 31.
Mounted upon the journal-box 20, (Figs. 3, 4, 5 and 6) is an arm having a stop-
pin or stud 34 and rigidly secured upon the shaft 19 is an arm or lever G provided
at the upper end with an outwardly extending pivot-pin 35 upon which is loosely
mounted a spring-pawl 36 for rotating the toothed wheel D, to the left, and a
spring pawl 37 for rotating such wheel D to the right, when the points of such
pawls are in engagement with the teeth of such wheel and the shaft 19 is rotated.
Revolubly mounted in suitable supporting bearings secured to the casing (as
shown in Figs. 2, 9 & 10) are shafts 40, 41 and 42, and upon each of these shafts
are mounted pulleys 43, 44 and 45, preferably three of such pulleys upon each of
said shafts, as shown in Figs. 9 and 10. Rigidly mounted in suitable supports 46
is a shaft 47, and adjustably mounted or secured thereon are a number of forwardly
and downwardly extending arms 49, having journal boxes supporting a shaft 50
provided with suitable pulleys 51 similar to the pulleys 43, 44 and 45, and around
the pulleys 43, 44, 45 and 51 are passed retaining bands or belts 52 of any suitable
flexible material which is also preferably slightly elastic, the tension of the bands
being regulated by adjustment of the arms 49, and the rollers 51 being preferably
an inch or so out of contact with the curtains on the roller B, as shown in Figs. 2
and 12.
The strain upon the drum will of course be increased as more of the curtains
are unrolled, and in order that the load upon the motor may be practically unvary-
ing, I have invented a regulator or regulating device H which is shown in detail
in Figs. 11, 13 and 14, and the construction of which is as follows:-
Firmly bolted to one of the end wheels 8 of the drum B, is a toothed ratchet-
wheel 56, and loosely mounted upon the shaft 7 adjacent thereto is a wheel 55 to
the inner side of which are secured a number of suitable pawls 57 adapted to
engage with the teeth of the wheel 56, which wheel 55 is provided on the outer
face with a helico-spiral or conoidal-sheave or pulley 59, of the well known fusee form
used in watches of the ancient type, which fusce or sheave is secured to the wheel 55
by suitable screws 58 as shown, or formed integral threwith, as may be desired. Se-
cured at the end to the central portion of this sheave or fusee 59, preferably by means
of a suitable screw 54, is a cord or cable 60, which passes over a pulley 61, and is
provided at the lower end with a suitable weight 62, (or as shown in Fig. 27 with
a tension spring (2 in place of the weight) the arrangement in either case being
such that when the wheel 55 is rotated to the right of Fig. 2, and to the left of
Fig. 14, the cable or cord 60 will be wound upon the fusee as shown in Figs. 2
and 13, this wound-up position of the fusee being when the curtains are unwound
from the roller B and the greatest strain is therefore exerted upon such drum, as
shown in Fig. 2. When the drum B is rotated to the left so as to wind up the
curtains C thereon, the cord or cable 60 will be gradually unwound from such
fusee or helico-spiral or conoidal sheave 59 until the same is entirely unwound
as shown in Fig. 14, and the strain of such cord or cable is exerted upon the
screw 54 in a direct line with the center of the hub of the wheel 55, after which
the sheave and its wheel 55 will of course be held stationary by such cable 60 while
the further rotation of the drum is allowed to continue, the pawls 57 then slipping
by the teeth of the wheel 56, sufficiently far to allow the end of the next curtain
to be exhibited as hereinafter described, to drop from underneath the belts 52,
and immediately upon the reverse rotation of the drum to the right for the purpose
of lowering the curtains into the position shown in Fig. 2, the pawls 57 impinging
against the teeth of the wheel 56 will instantly start the wheel 55 and sheave 59
into rotation to the right, so as to again wind such cable 60. upon such sheave 59.

page_text: The operation is as follows:-
The curtains being in the position shown in Fig. 2, with the exception that
the curtain C is on exhibition, and the cam-pin 24 of the sector-gear 21 adjacent
to the axis of the wheel 26, as shown in dotted lines in Fig. 1, the main shaft 31
being rotated by the motor E this will rotate the spur-wheel 26 in the direction
of the arrow shown in Figs. 2 and 3, which will actuate the sector-gear so as to
rotate the shaft 19 to the left, so that the pawl 36 will rotate the wheel D, so as
to rotate the drum B to the left and wind up the curtains thereon until the ends
of such curtains pass from under the bands 52 at R in Figs. 2 and 15 when they
will fall as shown in Fig. 15. The particular curtain to be exhibited falls when
the lever G has reached the upward position shown in Figs. 1, 5 and 6, the sector-
gear 22 and the pin 24 being then at the point N of the cam-way 25 at which
point there will consequently be a slight dwell in rotation of the drum 13, until
such cam-pin 24 on the continued rotation of the wheel 26 causes a movement
of the sector-gear 22 so as to rotate the shaft 19 to the right, and the portion 38
of the pawl 37 being depressed by the stop 34 such pawl 37 will skip, say one
tooth, of the wheel 1), as shown in dotted lines in Fig. 5, and will thereafter rotate
the wheel D, to the right into the position shown in full lines in Fig. 5, with the
sector-gear 22 at the downward position shown in dotted lines in Fig. 1, when
the parts will be as shown in Fig. 2, with the curtain C¹ on view; and as the cam-
pin 24 continues its travel from S to S¹ in Fig. 3, the sector-gear will remain
entirely stationary, thereby causing a dwell to allow of the inspection of the curtain
on view.
As I prefer to make this apparatus, its cycle of operation, or the time within which
one curtain is brought to a designated position and another curtain is brought to
the same position, is in time one minute, which time is usually divided into one-
quarter of a minute for the raising of the curtain, one-quarter of a minute for the
lowering of the curtain and one-half a minute for the exposure of the same.
The curtain C¹ having been exhibited for the required time, by the continued
rotation of the motor-shaft, the curtains C2, C3, and so on are one by one successively
brought to view by reason of the gain in rotation of the drum B in one direction
being of a length to permit this, usually that of the overlap of the curtain ends.
In order to keep the curtains from fouling with the operating mechanism I
usually provide a girdle or guard 0, as shown in Fig. 2, extending in front of
and around such mechanism.
In the modified form of construction shown in Fig. 15, the cam-wheel 26, is
operated directly by the endless screw 30, and the sector-gear 22 has its teeth
upon the periphery, instead of on the side,, so as to mesh with a pinion 70 (shown
in dotted lines in said Fig. 15) rigidly mounted upon a shaft 19 carrying the
arm G, which in turn carries the pawls 36 and 37, rotating the wheel D, the
part 38 of the pawl 37 being depressed by the stud 34 which is in this case secured
to a portion of the supporting frame, and the lever 33 being consequently omitted.
The wheel 1 rotates a gear-wheel or pinion 71, which meshes with the gear-wheel
or pinion 15, which is equivalent to the sprocket-wheel 15 in the foregoing views,
and is rigidly secured to the shaft 7 carrying the drum B, and in any form of
the device the shaft 45 may be supported in journal boxes N, adjustable by serews 75
so as to vary the tension on the belts 52, and consequently upon the curtains
without disturbance of the arms 49 or rollers 51.
The modified form of device shown in Figs. 10 to 26, inclusive, differs from
those heretofore described as follows:-
Rigidly mounted upon the shaft 7, is a gear-wheel 81, meshing with which are
gear-wheels 9 and 10', the wheel 91 being revolubly mounted upon a shaft 1.11,
and the wheel 10 rigidly mounted upon a sleeve 10%, which is revolubly mounted
on a shaft 121, the shafts 111, 12 and 131 being secured to the casing A, as shown
in Fig. 16. Secured to and rotating with the wheel 9' is a sprocket wheel 14',
and secured to and rotating with the sleeve 102 and gear-wheel 101 is a sprocket-
wheel 16 and revolubly mounted upon the sleeve 10 between the pinion or gear-

page_text: wheel 10' and the sprocket-wheel 161 is a sprocket-wheel 15' mounted on the shaft 13¹
and vibrating freely thereon is a sleeve 18, carrying a lever 191 having the brake-
face 201, a lever 21 having the brake-face 221, the backwardly extending lever 231
having the weight 24' and the lever 25', having the tooth 26', adapted to engage
as hereinafter described with the gear-wheel 8' so as to lock same.
The motor E in this form of device rotates a sprocket-wheel 40' (mounted upon
a shaft 40) by means of a gear-wheel 41' and endless-screw 421. Passing around
the sprocket-wheels 40, 151 and 16, thence down and underneath an idler
sprocket-wheel 44' and again to the sprocket-wheel 41' is a sprocket-chain H¹.
This sprocket-chain H' consists of a series of central links 45' which fit the teeth
of the sprocket-wheels 15¹, 40', 431 and 441, such central links 45' extending the
entire length of the endless chain or band so formed; and of a series of right-
hand side links 46' (when looking from the front) (which links 461 when brought
into contact with the sprocket-wheel 16 rotate the same) and also of a series of
left-hand side links 47 secured to the links 451 serve to rotate the wheel 14' to
the left, in a direction opposite to that in which the wheels 15¹ and 16' are rotated
by such chain H'.
As shown in diagrammatic Figs. 23, 24, 25 and 26, when the single central
idler portions I and I of the chain H' shown in Fig. 21, is passing over the idler
wheel 15 the curtain-carrying roller or drum. B will remain at rest. Such idler
portions I and I are shown by single dots in Figs. 23 to 25, and the portion K of
the chain having the links 46 which rotates the sprocket-wheel 16 is shown
therein by dashes and single dots while that portion L which is provided with the
links 47 is shown therein by dashes and two dots. The shorter idler portion I'
of the chain is interposed between the double link parts K and L at one end thereof,
and the long idler portion I connects parts K and L at the other end of same.
The parts being in the position shown in Figs. 17 and 23, with the curtain C
on exhibition, the endless sprocket-chain H being rotated in the direction of the
arrows (Figs. 17 23, 24, 25 and 26) the drum B will remain at rest until the
first of the links 46 at N comes in contact with the brake-face 201 (Fig. 24) so
as to lift the weight 24 and draw the dog 251' from the teeth of the wheel 81.
At this juncture the first link 461 engages with the wheel 161 which rotates the
gear-wheel 10' so that the gear wheel 81, and consequently the curtain-carrying
roller or drum B, will be rotated to the left so as to wind up the curtains as shown
in Fig. 24, and when the last of the links 46¹ at N¹ passes off from the sprocket-
wheel 16 the dog 25 will be by the weight 24', forced into the teeth of the
wheel S as shown in Fig. 25, where it will remain while the smaller idle portion 1'
of the chain H is being drawn over the idler pulley 151, the, drum B of course
remaining stationary, during which dwell the curtain to be next exhibited falls
down and remains stationary until the first of the links 471 of the portion L at
the point forces back the brake-face 201, so as to release the dog 251 from the
gear-wheel S¹, and rotate the sprocket-wheel 14', gear wheel 91 and gear wheel 81,
whereby the drum B will be rotated to the right, as shown in Fig. 26, until the
curtain C, is brought into the exhibiting position which the curtain C is in in
Fig. 17, which will be at the moment the last link 47' at the point 0', passes from the
sprocket-wheel 14 and brake-face 20', when the gear wheel 8 will be again
locked in position by the dog 251. Such curtain C will remain in the exhibiting
position during the passage of the long idler portion I of the chain H over the
sprocket-wheel 15 until the chain being rotated for another complete cycle, the
operation described will be repeated, when the curtain C will be put on exhibition.
It will be seen from the foregoing description that the proportionate lengths
one to the other of the operating parts L and K of the sprocket chain H' is such
that the rotation of the curtain-carrying roller or drum 13 to the left brought
about thereby is the length of the overlap of the curtain ends one upon the other
greater on each cycle of rotation of the chain H than is the rotation thereof in
the opposite direction, whereby as the chain H¹ is rotated there will be a con-

page_text: tinuous gain in rotation to the left of the curtain carrying roller or drum B, and
the same resultant gain in rotation of the drum B, may be brought about by
having the parts K and L of equal length, and making the sprocket-wheels 14¹
and 16 or the gear-wheels 91 and 10¹ of different sizes.
The modified form of construction shown in Figs. 27 to 31, is as follows:
Rigidly secured upon the shaft 7, by means of a spline 82 is a sprocket-wheel G³,
and loosely mounted upon the shaft 7 adjacent to the wheel G2 are two idler
sprocket-wheels H2 and 12, the wheel I2 being provided with an internal or
inwardly facing annular gear 92. Rigidly secured to the shaft 7 by a spline 10%,
is a spur-gear-wheel K, of the same pitch as the gear 92 of the wheel I, and
loosely mounted upon a shaft 112 is an idler spur-gear-wheel L2 which meshes
on the one side with the wheel K2 and on the other with the internal annular-
gear 92 of the wheel I2:
Operating the sprocket-wheels G2, H2 and I2, is a sprocket-chain H¹ (sub-
stantially similar in form to the chain H heretofore described, having central
links 12 connected together so as to form an endless chain or belt, provided upon
one side with a series of side links 132 for actuating the wheel G³, and on the
other side of another portion of its length with a similar series of similar links 142,
shown in dotted lines in Fig. 30, for actuating the wheel I, the central links 122
actuating at all times (when the chain is in motion) the central loose sprocket-
wheel H2. As shown in Fig. 28 the endless chain or belt formed by the central
links 12 passes around and is actuated by a sprocket-wheel 132 rotated by the
motor E, and such chain being usually of considerable length is generally passed
around suitable idler sprocket-wheel 162 and 172 as shown in Fig. 28.
In this form it will be seen that a rotation of the wheel G2 in one direction will
rotate the drum B in the same direction, and that a rotation of the wheel I³, in
such direction will through the annular gear 92 and connecting gear-wheels K2
and 11, rotate the drum B in the opposite direction, and in order to obtain tho
required gain in rotation in one direction of the drum B, it is only necessary to
properly proportion one to another the working side-link-portions of the chain,
and the various gears.
In Figures 32 to 37 inclusive I have shown the curtains divided longitudinally
into two series R and S2, and when so arranged the overlap of the curtain ends
in either one of the series is now double the gain in rotation during one cycle
but the ends of the two series are staggered one to another, and therefore a fresh
curtain is exhibited either from the series R or from the series S each cycle, the
curtain being taken from the series R and S2 alternately. In Figs. 32 to 37
inclusive only two curtains of each series are shown for the sake of clearness.
Fig. 33 shows the position of the curtains on the drum just before the end of the
curtain T of the series R falls down, having passed from under the bands 521
indicated by dotted lines in the figures. After this curtain has been exhibited
the curtain T of the series S2 is exhibited during the next cycle along with the
curtain T of the series R, as shown in Fig. 32. During the next cycle, the
curtain U of the series R is exhibited along with the curtain T, of the series S,
as shown in Fig. 36 and in the two end views of the drum and curtains, Figs. 35
and 37. Fig. 34 shows the position of the drum and curtains just before the end
of the curtain U of the series S2 falls from under the bands 52 prior to being
exhibited along with the curtain U of the series R. Thus by this arrangement
each curtain will be exhibited during two cycles of rotation of the drum, but
each time with a different curtain of the other series. By slight mechanical
changes instead of two series of curtains an indefinite number of series may be
used.
In the modified form of construction shown in Figs. 38 to 46 inclusive I have
shown the pawl and ratchet device of Figs. 1 to 15, mounted directly on the shaft 7
of the drum B, the pawl-carrying lever G being secured to a gear wheel 80, 5
having secured thereto a dwell-stop 81', such gear wheel and stop, as well as a slip-

page_text: journal or bearing 82, being of course loosely mounted on the shaft 7, and the
ratchet wheel 1) being rigidly secured to such shaft 7. Sliding freely through the
slip journal 82 is a rod W having a rack-gear 83 for rotating the gear-wheel 80,
and an upper and a lower slide dwell-stops or faces 85 and 86, which respectively
engage with the slide face 87 of the dwell-stop 81, as the rack-gear of the rod
leaves the wheel 80 on either the upward or downward movement of such rod so
as to lock such wheel 80 against rotation. The rod W is reciprocated by a crank-
pin SS carried by a lever 89 actuated by means of gear wheel 29³, and endless
screw 30%, motor-shaft 313 and motor E.
The length of the dwell-stops 85 and 86, gives the short curtain dropping and
long curtain exhibiting dwells, while the ratchet-wheel 1.and pawls 36 and 37,
as in Figs. 1 to 15 give the reciprocal or vibratory gainful rotative movement.
The four last views (Figs. 43 to 46) show the positions assumed by the parts of
this last form of construction when in operation.
In will be seen that in all the various forms of my improved exhibiting-
apparatus shown herein, the curtain carrying roller or drum B is automatically
reciprocally rotated with a gain in rotation in one direction for each cycle of such
reciprocal vibratory rotation or movement of the drum B, whereby the curtains or
the drum, are successively exhibited and in the means for bringing this about lies
the broad idea and essence of my invention.
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:-
1. A machine for exhibiting curtains etc., wherein the roller or drum carrying
the curtains is automatically reciprocally or vibratorily moved or rotated, first
in one direction and then in the other, so as to have a gain in rotation in one
direction for each cycle of such vibratory or reciprocal rotation or movement,
whereby the curtains carried by the roller or drum are exhibited one after the
other, substantially as shown and described and for the purposes set forth.
2. In a machine for exhibiting curtains, the combination with a roller or drum
of a plurality of curtains secured to the periphery of the drum, a wheel D,
mechanism connecting the wheel D with the drum so that rotation of the wheel 1)
will rotate the drum, an arm carrying two pawls adjacent to the wheel D so that
the movement of the pawls will rotate the wheel D in either direction, means for
preventing movement of the wheel D during a portion of the movement of the pawl
carrying device in one direction, a shaft carrying the pawl carrying device, a
sector gear 22 moving the pawl carrying device, a cam-wheel for operating the
sector gear 22, and a motor in actuating connection with the cam-wheel, sub-
stantially as shown and described.
3. In a machine for exhibiting curtains the combination with a roller or drum
of a plurality of curtains secured to the periphery of the drum, one or more endless
flexible elastic guiding bands or belts 52 in contact with the curtains on a portion
of the periphery of the drum and rotated by the rotation of the drum, substantially
as shown and described and for the purposes set forth.
4. In a machine for exhibiting curtains, the combination with a shaft 7, of
wheels or end pieces 8 provided with the holes 9 mounted upon the shaft 7, a
plurality of rods or bars 12 secured at the ends in the holes 9, so that such rods
in connection with the end pieces or wheels 8 form a drum, and a plurality of
curtains secured at one end to the rods or bars 12, substantially as shown and
described and for the purposes set forth.
5. In a machine for exhibiting curtains the combination with a roller or drum,
of a plurality of curtains carried by the drum, a motor-shaft a triple-linked-
sprocket-chain rotated in one direction by the motor-shaft, and mechanism con-
necting the sprocket-chain with the roller or drum in such manner that the
rotation of the sprocket-chain in one direction will cause a rotation of the drum

page_text: first in one direction and then in the other, substantially as shown and described
and for the purpose set forth.
6. In a machine for exhibiting curtains, the combination with a roller or drum,
of a plurality of curtains carried by the drum, a motor, a sprocket-wheel driven
by a chain, belt, or band, a gear-wheel rotated by the motor in one direction and
actuating the chain, belt, or band, a gear-wheel rotated in one direction by the
chain, belt, or band, a gear-wheel rotated by the chain, belt, or band 'in a direction
opposite to that in which the chain rotates the first mentioned wheel, and a gear-
wheel meshing with the two first mentioned gear-wheels and connected with. the
drum so as to reciprocally or vibratorily move or rotate the same, substantially as
shown and described.
7. In a machine for exhibiting curtains, the combination with a revolubly
supported roller or drum, of mechanism for reciprocally or vibratorily rotating the
roller or drum, first in one direction and then in the other in such manner that
such roller or drum will have a continual gain in rotation in one direction, and a
plurality of curtains secured at one end to the roller or drum and divided longi-
tudinally into two or more series of curtains, the ends of the curtains of one series
being staggered to the ends of the other series, and the overlap of the outer end of
the curtains one upon the other when rolled upon the drum being greater in length
than that of the gain in rotation of the drum during each cycle of vibratory or
reciprocal rotation or movement substantially as shown and described.
8. In a machine for exhibiting curtains etc., the combination with a revolubly
supported shaft, of a sprocket-wheel or pulley rigidly mounted thereon, two idler
sprocket-wheels or pulleys loosely mounted upon such shaft, gearing connecting
one of such idler sprocket-wheels or pulleys with such shaft in such manner that
the rotation of such geared sprocket-wheel or pulley in one direction will rotate
the shaft in the opposite direction, mechanism for rotating all the sprocket-wheels
or pulleys in the same direction, a drum rigidly secured to the shaft, and a
plurality of curtains secured at one end to the periphery of the drum, the con-
struction and arrangement being such that the drum is vibratorily or reciprocally
rotated or moved first in one direction and then in the other with a continual
gain in rotation in one direction, substantially as shown and described and for the
purposes set forth.
9. A machine for exhibiting curtains etc., wherein the roller or drum carrying
the curtains is reciprocally or vibratorily rotated first in one direction and then
in the other by a rack-rod meshing with a suitable gear wheel, the rack-rod locking
the drum against rotation when its rack-gear leaves the gear wheel on either the
upward or downward stroke, and the construction being such that there is a gain
in rotation in one direction for each cycle of reciprocation of the rod, substantially
as shown and described and for the purpose set forth.
10. In a device of the class described, the combination with a roller or drum
rigidly mounted upon a shaft 7, of a curtain or curtains secured at one end to
the periphery of the drum, a wheel loosely mounted upon the shaft 7, a helico-
spiral sheave or fusee secured to the wheel, a ratchet wheel secured to the drum,
a pawl or pawls secured to the helico-spiral sheave or fusee, a cord, wire or rope
secured to the device so as to be wound upon the helico-spiral sheave or fusee upon
the rotation thereof, and means for exerting a tension or strain upon the end of
the cord, wire or rope, substantially as shown and described.
Datal h 12th day of Annil 1808
FELL & JAMES,
Agents for the Applicant.