CA1116850A - Display devices - Google Patents
Display devicesInfo
- Publication number
- CA1116850A CA1116850A CA000334376A CA334376A CA1116850A CA 1116850 A CA1116850 A CA 1116850A CA 000334376 A CA000334376 A CA 000334376A CA 334376 A CA334376 A CA 334376A CA 1116850 A CA1116850 A CA 1116850A
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- rotation
- display
- carriers
- carrier
- axes
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Abstract
ABSTRACT
A display device comprises a rotary carrier and a plurality of supports for respective display slats which supports are mounted on the carrier for rotation around the axis of rotation of the carrier and for rotation about respective axes, which are equiangularly spaced about the axis of rotation of the carrier. A slat is mounted on each support with its longitudinal centre line coaxial with the axis of rotation of the support. The arrangement permits each slat to be turned to show both its faces and by movement of the slats around the axis of the carrier it permits alternative slats to be brought into the display surface.
A display device comprises a rotary carrier and a plurality of supports for respective display slats which supports are mounted on the carrier for rotation around the axis of rotation of the carrier and for rotation about respective axes, which are equiangularly spaced about the axis of rotation of the carrier. A slat is mounted on each support with its longitudinal centre line coaxial with the axis of rotation of the support. The arrangement permits each slat to be turned to show both its faces and by movement of the slats around the axis of the carrier it permits alternative slats to be brought into the display surface.
Description
1116~50 The present invention relates to display devices and ln particular to display devices of the type in which a display suxface is formed of a series of separate narrow rectangular surfaces arranged in substantially abutting relation along their longitudinal edges, such separate narrow rectangular surfaces being mo~able lnto and out of a position in which they form part of the display surface.
One well known form of device of this class comprises a series of members of triangular ~ross section, mounted side-by-side, each being rotatable about its longitudinal axis and arranged to move through ~ngular steps of 120 , so that each face is cyclically brought into a display surface position in which it is lS aligned with the corresponding faces of the other triangular members, which are all then halted in such position for a short interval, during which a message or advertisement, ; covering the whole display surface, is presented for observation .
In another device of the same general type the display surface is composed of separate slat-like elements, each of which forms one of a series carried on spaced drive chains. The number of different ~essages or advertisements which can be presented is ` equal to the number of slats in each series.
In both types of device the members forming the interchangeable display are housed, together with their s drives, in an enclosed cabinet.
Both forms of device have certain drawbacks. One of the requirement~ of successful display devices is that there must be initial movement to attract the eye to the device before the display of the message or advertlsement commences.
The type of device, having rotatable triangular members, i9 open to the objection that it can only -~ carry three messages or advertisements. It i8 al~o open to the ob~ection that in moving from one di~play position to the next, the movement is not very conspicuous. The alternative device, in which the slats are carried on chains, is more satisfactory in both these respects, but the construction i9 expensive by reason of the large number of device chains and furthermore the spatial requirements, particularly depth from front to rear, of its cabinet restr ct the use of the device to sites where there is adequate depth available.
It i~ an ob~ect of the invention to enable an improved form of device of this general class to be made which i8 constructed so as to provide at least four, and preferably six, alternative display surfaces, but which may be constructed so as to occupy less depth than the type of device in which the individual slats are carried on chainR.
- 25 According to the pre-~ent invention there is provided a di~play device comprising a plurality of rotary carriers mounted for rotation about respective axes which are parallel to each other, each of said carriers having mounted thereon, for rotation about respective second axes which are parallel to and equiangularly spaced about 1~168SO
the ~aid axl~ of rotation of the carr~er, three supports each carrylng meAns provlding two elongate di~play faces which are di~po~ed back to back and whose respective lengthwi~e axe~ are substantially coincident with the said second axis of rotation of the ~upport, the arrangement of the carrier~ and support~ being such that each di~play face on each carrier is capable of forming with a displ~y face on each of the other carriers a ~ubstantially continuous display surface, motor means connected to rotate the carriers in rotational step~ of 120 in unison to move each support on the carrier in turn into a position in which a display thereof i5 in a display position, means as~ociated with each carrier for rotating the support which is being moved out of ~aid display position through 180 about said second axi~
during that 120 rotational step of the carrier, and means for oscillating each of the other two supports rotationally to and fro about their respective ~econd axes during such 120 rotational step for providing a clearance between the longitudinal çdges of the display faces on the support being rotated through 180 and the longitudinal edges of the di-~play faces on the other two Qupport~. This arrangement permits each -Qlat to be turned to show both its face~ and by movement of the slats around the axis of the carrier it permits alternative slats to be brought into the display surface. It will be understood that two slats per carrier gives four altern-ative display surfaces and that three slats per carrier gives six alternative display surfaces. The slats are conveniently mounted for rotation about their centre .. . .
~16a~0 ~- 4 -line and their rotation is preferably effected during the course of movement out of the display surface position, since the combined rotational and translational movement of the slat has a much greater effect in catching the eye than a translational movement alone.
In one arrangement made in accordance with the invention the rotatable carriers are mounted on parallel vertical shafts, the spacing between which i8 equal to the modular or nominal width of the slats, each carrier carrying three slats which are mounted for rotation about their longitudinal centre lines, the axes of the slat pivots being arranged symmetricall~ about the axis of the carrier at the apice~ of an equilateral triangle, the sides of which are half the modular width of the ~lats.
Means are provided for rotating the carrier~ by 120 step~, with a display period, during which the slats are at rest, in the interval between successive angular movements. In the cour~e of each angular movement of the carrier, that slat which is moving away from the display position i8 rotated through 180 about it~ own axis 80 that the reverse face of the slat is presented when the slat next arrives at the display position. This rotation of the front slat provides a desirable eye-catching movement and is necessarily accompanied bymovement of the two other slats mounted on the same carrier as will be explained below. In this arrangement the nomin~l or modular width of the slats slightly exceeds their actual width by a distance of about 3/32 inch, but the resultant spacing of the slats in the display ~116850 po~itlon is not found deleteriouJ in practice. It i8 found necesssry to provide a spacing of thls order to avoid j~mming of the ~lats. It will be appreciated that when o~e ~lat of each ~et is in the display S position, the other slats carried by the same carrier are arranged as the edges of an eguilateral trlangle in relation to it.
The invention also provides a display device comprising a plurality of rotary carriers mounted for rotation about respective axes which are parallel to each other, each of ssid carriers having mounted ¦ thereon, for rotation about respective second axes which are parallel to and equiangularly spaced about the said axiq of rotation of the c~rrier, three supports each carrying means providing two elongate display faces which are disposed back to back and whose respective lengthwise axes are substantially coincident with the said second axis of rotation of the support, ¦ the arrangement of the carriers and supports being ! 20 such that each display face on each carrier is capable of forming with a display face on each of the other carriers a substantially continuous display surface, i motor means connected to rotate the carriers in unison in rotational step of 120 to move, in turn, each support on each carrier into a position in which a display face thereof is in a display position, means as~ociated with each carrier for rotating the support which is moving away from the display position through 180 about said second axis during that 120 rotational ~tep of the carrier, and means for moving the other supports further from the first said axis during said 120 rotational step. In these layouts the slats are ., .
mounted ~n a triangular arrangement in a 8imilar way~
except that the supports are mounted for guided movement radially away from the axis of the carrier 80 as to permit one of the slats to be rotated without movement of the other two slats.or, in some layout~, with a lesser movement of the other two slats.
The invention further provides a display devlce comprising B plurality of rotary carriers mounted for rotation stepwise in unison about respective axes which are parallel to each other, each of said carriers having mounted thereo~ for rotation about respective ~;~ second axes which are parallel to and equiangularly spaced about the said axis of rotation of the carrier, a plurality of supports each carrying means providing two elongate d$splay faces which Are disposed back to back and the respective lengthwise axes of which are substant-ially coincident with the said second axis of rotation of the ~upport, the arrangement of the carrier and ~upports being such that each display face on each carrier is capable of forming with a di~play face on each of the other carriers a substantially continuou~ display surface and means for progressively rotating the supports : leaving the display po~ition through 180 about their : respective second axes, which progressive rotation commences simultaneously with the begi~ning of the rotational step of the carriers and ends simultaneously with the end of the rotational step of the carriers.
Referring now to the accompanying drawings:-Figure~ 1 to 18 illustrate diagrammatically the , 11~6850 series of movements involved in moving the slats of one form of apparatus made in accordance with the invention, and Figure 19 illustrates a device for dri~ing the arrangement of slats shown in Figures 1 to 18.
In Figure 1 the display surface of the device is composed of the aligned faces A of slats a, only two of which are shown in the series of Figures 1 to 18.
A set of slats a, c and e are mounted on a carrier.
The slats a, c, e respectively have display faces A, B;
C,D and E, F. The set of slats a, c, e are mounted on a carrier which is mounted for rotation about axis ~.
The carrier is rotated about axis ~ in steps of 120 and many known forms of drive may be employed for that purpose. The slats a, c, e are pivotally mounted in the carrier on axes i, k, 1 and drive Means are provided for turning the slats about these axes to impart the angular motions indicated in Figures 1 to 18. One drive me~ns suitable for this purpose is shown in Figure 19 and will be described presently. The light and dark semi-circles indicated on slats a are shown only to facilitate identification of the two faces of these slats during their rotation as shown in Figures 1 to 18.
In Figures 1 to 18 the movement of the slats a, c, e 25 during a 120 step of the carrier is illustrated. As will be seen, the carrier is turning clockwise and during the first 90 of movement of the carrier the slat a turns through 180 in relation to slats c and e, so that face B is brought into an outwardly facing position.
~116850 From Fi~ures 1 to 6 it will be seen that during `~ the first 30~ movement of the carrier in clockwise direction, slat a turns through 60 about its axis in anticlockwise direction and during the same interval ~lats c and e turn through 30 in anticlockwise direction. At this point, shown in Figure 6, slat a is perpcndicular to slat e. In order to avoid a clash between slat a and slat e, it is necessary to reverse the rotation of slat e about its axis 1 and while the carrier advances from 30 to 48 slats c and e rotate clockwise through 30 to return them to their original angular disposition to each other, - i.e. to the relative position shown in Figure 1. It now becomes necessary to turn slat c clockwise through 30 to allcw slat a to reach the position shown in Figure 11, when it passes the axis k of slat c, in which position slat a is perpendicular to slat c. To avoid clashing between slats c and e, slat e is also rotated clockwise through 30 during the same interval.
During the advance of the carrier from 60 (Figure 11) to 90 (Figure 16) slat a perfo~ns a final 60 counterclockwise rotation and slats c and e rotate 30 counterclockwise to bring all three slats back to their original relative positions, except that 25 face B now faces outwardly. During the final movement of the carrier from 90 to 120, the slats a, c and e are at rest in relation to their own axes.
At the end of the 120 movement of the carrier, the faces ~ are all aligned at the display surface and the carrier is halted du-ing a predete~nined display interval.
It will readily be appreciated that all six slat surfaces are brought cyclically into the display position.
Study of Figures 1 to 16 will show that the left hand edge tip of slat a is virtually stationary during movement between the positions shown in Figure 1 and Figure 16 and this gives a vlsual impression that slat a ;;~ is pivoting about this edge, in a manner similar to the page of a book.
It will be seen that during initial movement of the carrier, progressively larger areas of face F are exposed to view9 but that situation reverses suddenly between Figures 8 and 10. Thereafter progressively larger areas of face E can be seen.
It will be understood that slats a, c, e need not be elements of the device in its form as sold and each slat need be no more than 2 strips of paper, back to ` back, held in top and bottom clamps constituting supports, to which the above described motions are i~parted, ~o In Figure 19 there is illustrated a device for driving the slats a, c, e, which are not necessarily integers of the advertising device and may be no more than strips of paper or paper board cut out from an illustration, as explained above. In Figure 19 the driver for three slat stations only are illustrated, but any number of such stations can be similarly arranged between the two end stations.
- At each slat station a drive spindle l is rotatably mounted in-be~rings 2, carried in a frame member 3. The spindle 1 has a collar 4 to prevent downward movement.
1~685~
A ~l~t spindl~ carrier 5 ls secured to the top end of each drive spindle 1 and c~rries three slat spindles 6 nrranged therein at 120 angles. Each spindle 6 is provided with a slat support 7 at its top end and the spindles 6 are turned ln their bearing~ 8 by engagement o upper and lower cam followers 9 and 10, which are arranged at 180 to each other and secured to the related spindle 6. The cam followers 9 engage with an upper cam 1 and the cam follower 10 engages with lower cam 12. The spindles 6 are oscillated as a result of the engagement of their cam followers with the cams 11 and 12 during rotation of the spindle 1.
The cams 11 and 12 are deve]oped to oscillate the slats in accordance with Figures 1 to 18, All the spindles 1 carry a crank arm 15, provided with a crank pin 16 rotatably engaged with a connecting rod 17. Thus, in a device having more than three stations, the drive spindles 1 of the additional station will be similarly spaced along and coupled to a connecting rod of appropriate length. The two end apindles 1 carry sprockets 18, which are interconnected by a drive chain (not shown), so that all spindles 1 are turned in synchronism.
The illustrated drive arrangement is duplicated at the top of the cabinet ~but inverted) to provide an upper ~ end drive for the slats.
An upper and lower spindle 1 at one end of the device is provided with a spur gear (not shown) for drive input from a motor, which is under the control of a control un;t arranged to allow the motor to turn the 1~6850 spindles 1 through a 120 increment and then to halt : for a predete~nined interval before making the next `; 120 turn of the spindle 1.
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One well known form of device of this class comprises a series of members of triangular ~ross section, mounted side-by-side, each being rotatable about its longitudinal axis and arranged to move through ~ngular steps of 120 , so that each face is cyclically brought into a display surface position in which it is lS aligned with the corresponding faces of the other triangular members, which are all then halted in such position for a short interval, during which a message or advertisement, ; covering the whole display surface, is presented for observation .
In another device of the same general type the display surface is composed of separate slat-like elements, each of which forms one of a series carried on spaced drive chains. The number of different ~essages or advertisements which can be presented is ` equal to the number of slats in each series.
In both types of device the members forming the interchangeable display are housed, together with their s drives, in an enclosed cabinet.
Both forms of device have certain drawbacks. One of the requirement~ of successful display devices is that there must be initial movement to attract the eye to the device before the display of the message or advertlsement commences.
The type of device, having rotatable triangular members, i9 open to the objection that it can only -~ carry three messages or advertisements. It i8 al~o open to the ob~ection that in moving from one di~play position to the next, the movement is not very conspicuous. The alternative device, in which the slats are carried on chains, is more satisfactory in both these respects, but the construction i9 expensive by reason of the large number of device chains and furthermore the spatial requirements, particularly depth from front to rear, of its cabinet restr ct the use of the device to sites where there is adequate depth available.
It i~ an ob~ect of the invention to enable an improved form of device of this general class to be made which i8 constructed so as to provide at least four, and preferably six, alternative display surfaces, but which may be constructed so as to occupy less depth than the type of device in which the individual slats are carried on chainR.
- 25 According to the pre-~ent invention there is provided a di~play device comprising a plurality of rotary carriers mounted for rotation about respective axes which are parallel to each other, each of said carriers having mounted thereon, for rotation about respective second axes which are parallel to and equiangularly spaced about 1~168SO
the ~aid axl~ of rotation of the carr~er, three supports each carrylng meAns provlding two elongate di~play faces which are di~po~ed back to back and whose respective lengthwi~e axe~ are substantially coincident with the said second axis of rotation of the ~upport, the arrangement of the carrier~ and support~ being such that each di~play face on each carrier is capable of forming with a displ~y face on each of the other carriers a ~ubstantially continuous display surface, motor means connected to rotate the carriers in rotational step~ of 120 in unison to move each support on the carrier in turn into a position in which a display thereof i5 in a display position, means as~ociated with each carrier for rotating the support which is being moved out of ~aid display position through 180 about said second axi~
during that 120 rotational step of the carrier, and means for oscillating each of the other two supports rotationally to and fro about their respective ~econd axes during such 120 rotational step for providing a clearance between the longitudinal çdges of the display faces on the support being rotated through 180 and the longitudinal edges of the di-~play faces on the other two Qupport~. This arrangement permits each -Qlat to be turned to show both its face~ and by movement of the slats around the axis of the carrier it permits alternative slats to be brought into the display surface. It will be understood that two slats per carrier gives four altern-ative display surfaces and that three slats per carrier gives six alternative display surfaces. The slats are conveniently mounted for rotation about their centre .. . .
~16a~0 ~- 4 -line and their rotation is preferably effected during the course of movement out of the display surface position, since the combined rotational and translational movement of the slat has a much greater effect in catching the eye than a translational movement alone.
In one arrangement made in accordance with the invention the rotatable carriers are mounted on parallel vertical shafts, the spacing between which i8 equal to the modular or nominal width of the slats, each carrier carrying three slats which are mounted for rotation about their longitudinal centre lines, the axes of the slat pivots being arranged symmetricall~ about the axis of the carrier at the apice~ of an equilateral triangle, the sides of which are half the modular width of the ~lats.
Means are provided for rotating the carrier~ by 120 step~, with a display period, during which the slats are at rest, in the interval between successive angular movements. In the cour~e of each angular movement of the carrier, that slat which is moving away from the display position i8 rotated through 180 about it~ own axis 80 that the reverse face of the slat is presented when the slat next arrives at the display position. This rotation of the front slat provides a desirable eye-catching movement and is necessarily accompanied bymovement of the two other slats mounted on the same carrier as will be explained below. In this arrangement the nomin~l or modular width of the slats slightly exceeds their actual width by a distance of about 3/32 inch, but the resultant spacing of the slats in the display ~116850 po~itlon is not found deleteriouJ in practice. It i8 found necesssry to provide a spacing of thls order to avoid j~mming of the ~lats. It will be appreciated that when o~e ~lat of each ~et is in the display S position, the other slats carried by the same carrier are arranged as the edges of an eguilateral trlangle in relation to it.
The invention also provides a display device comprising a plurality of rotary carriers mounted for rotation about respective axes which are parallel to each other, each of ssid carriers having mounted ¦ thereon, for rotation about respective second axes which are parallel to and equiangularly spaced about the said axiq of rotation of the c~rrier, three supports each carrying means providing two elongate display faces which are disposed back to back and whose respective lengthwise axes are substantially coincident with the said second axis of rotation of the support, ¦ the arrangement of the carriers and supports being ! 20 such that each display face on each carrier is capable of forming with a display face on each of the other carriers a substantially continuous display surface, i motor means connected to rotate the carriers in unison in rotational step of 120 to move, in turn, each support on each carrier into a position in which a display face thereof is in a display position, means as~ociated with each carrier for rotating the support which is moving away from the display position through 180 about said second axis during that 120 rotational ~tep of the carrier, and means for moving the other supports further from the first said axis during said 120 rotational step. In these layouts the slats are ., .
mounted ~n a triangular arrangement in a 8imilar way~
except that the supports are mounted for guided movement radially away from the axis of the carrier 80 as to permit one of the slats to be rotated without movement of the other two slats.or, in some layout~, with a lesser movement of the other two slats.
The invention further provides a display devlce comprising B plurality of rotary carriers mounted for rotation stepwise in unison about respective axes which are parallel to each other, each of said carriers having mounted thereo~ for rotation about respective ~;~ second axes which are parallel to and equiangularly spaced about the said axis of rotation of the carrier, a plurality of supports each carrying means providing two elongate d$splay faces which Are disposed back to back and the respective lengthwise axes of which are substant-ially coincident with the said second axis of rotation of the ~upport, the arrangement of the carrier and ~upports being such that each display face on each carrier is capable of forming with a di~play face on each of the other carriers a substantially continuou~ display surface and means for progressively rotating the supports : leaving the display po~ition through 180 about their : respective second axes, which progressive rotation commences simultaneously with the begi~ning of the rotational step of the carriers and ends simultaneously with the end of the rotational step of the carriers.
Referring now to the accompanying drawings:-Figure~ 1 to 18 illustrate diagrammatically the , 11~6850 series of movements involved in moving the slats of one form of apparatus made in accordance with the invention, and Figure 19 illustrates a device for dri~ing the arrangement of slats shown in Figures 1 to 18.
In Figure 1 the display surface of the device is composed of the aligned faces A of slats a, only two of which are shown in the series of Figures 1 to 18.
A set of slats a, c and e are mounted on a carrier.
The slats a, c, e respectively have display faces A, B;
C,D and E, F. The set of slats a, c, e are mounted on a carrier which is mounted for rotation about axis ~.
The carrier is rotated about axis ~ in steps of 120 and many known forms of drive may be employed for that purpose. The slats a, c, e are pivotally mounted in the carrier on axes i, k, 1 and drive Means are provided for turning the slats about these axes to impart the angular motions indicated in Figures 1 to 18. One drive me~ns suitable for this purpose is shown in Figure 19 and will be described presently. The light and dark semi-circles indicated on slats a are shown only to facilitate identification of the two faces of these slats during their rotation as shown in Figures 1 to 18.
In Figures 1 to 18 the movement of the slats a, c, e 25 during a 120 step of the carrier is illustrated. As will be seen, the carrier is turning clockwise and during the first 90 of movement of the carrier the slat a turns through 180 in relation to slats c and e, so that face B is brought into an outwardly facing position.
~116850 From Fi~ures 1 to 6 it will be seen that during `~ the first 30~ movement of the carrier in clockwise direction, slat a turns through 60 about its axis in anticlockwise direction and during the same interval ~lats c and e turn through 30 in anticlockwise direction. At this point, shown in Figure 6, slat a is perpcndicular to slat e. In order to avoid a clash between slat a and slat e, it is necessary to reverse the rotation of slat e about its axis 1 and while the carrier advances from 30 to 48 slats c and e rotate clockwise through 30 to return them to their original angular disposition to each other, - i.e. to the relative position shown in Figure 1. It now becomes necessary to turn slat c clockwise through 30 to allcw slat a to reach the position shown in Figure 11, when it passes the axis k of slat c, in which position slat a is perpendicular to slat c. To avoid clashing between slats c and e, slat e is also rotated clockwise through 30 during the same interval.
During the advance of the carrier from 60 (Figure 11) to 90 (Figure 16) slat a perfo~ns a final 60 counterclockwise rotation and slats c and e rotate 30 counterclockwise to bring all three slats back to their original relative positions, except that 25 face B now faces outwardly. During the final movement of the carrier from 90 to 120, the slats a, c and e are at rest in relation to their own axes.
At the end of the 120 movement of the carrier, the faces ~ are all aligned at the display surface and the carrier is halted du-ing a predete~nined display interval.
It will readily be appreciated that all six slat surfaces are brought cyclically into the display position.
Study of Figures 1 to 16 will show that the left hand edge tip of slat a is virtually stationary during movement between the positions shown in Figure 1 and Figure 16 and this gives a vlsual impression that slat a ;;~ is pivoting about this edge, in a manner similar to the page of a book.
It will be seen that during initial movement of the carrier, progressively larger areas of face F are exposed to view9 but that situation reverses suddenly between Figures 8 and 10. Thereafter progressively larger areas of face E can be seen.
It will be understood that slats a, c, e need not be elements of the device in its form as sold and each slat need be no more than 2 strips of paper, back to ` back, held in top and bottom clamps constituting supports, to which the above described motions are i~parted, ~o In Figure 19 there is illustrated a device for driving the slats a, c, e, which are not necessarily integers of the advertising device and may be no more than strips of paper or paper board cut out from an illustration, as explained above. In Figure 19 the driver for three slat stations only are illustrated, but any number of such stations can be similarly arranged between the two end stations.
- At each slat station a drive spindle l is rotatably mounted in-be~rings 2, carried in a frame member 3. The spindle 1 has a collar 4 to prevent downward movement.
1~685~
A ~l~t spindl~ carrier 5 ls secured to the top end of each drive spindle 1 and c~rries three slat spindles 6 nrranged therein at 120 angles. Each spindle 6 is provided with a slat support 7 at its top end and the spindles 6 are turned ln their bearing~ 8 by engagement o upper and lower cam followers 9 and 10, which are arranged at 180 to each other and secured to the related spindle 6. The cam followers 9 engage with an upper cam 1 and the cam follower 10 engages with lower cam 12. The spindles 6 are oscillated as a result of the engagement of their cam followers with the cams 11 and 12 during rotation of the spindle 1.
The cams 11 and 12 are deve]oped to oscillate the slats in accordance with Figures 1 to 18, All the spindles 1 carry a crank arm 15, provided with a crank pin 16 rotatably engaged with a connecting rod 17. Thus, in a device having more than three stations, the drive spindles 1 of the additional station will be similarly spaced along and coupled to a connecting rod of appropriate length. The two end apindles 1 carry sprockets 18, which are interconnected by a drive chain (not shown), so that all spindles 1 are turned in synchronism.
The illustrated drive arrangement is duplicated at the top of the cabinet ~but inverted) to provide an upper ~ end drive for the slats.
An upper and lower spindle 1 at one end of the device is provided with a spur gear (not shown) for drive input from a motor, which is under the control of a control un;t arranged to allow the motor to turn the 1~6850 spindles 1 through a 120 increment and then to halt : for a predete~nined interval before making the next `; 120 turn of the spindle 1.
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Claims (4)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A display device comprising a plurality of rotary carriers mounted for rotation about respective axes which are parallel to each other, each of said carriers having mounted thereon, for rotation about respective second axes which are parallel to and equiangularly spaced about the said axis of rotation of the carrier, three supports each carrying means providing two elongate display faces which are disposed back to back and whose respective lengthwise axes are substantially coincident with the said second axis of rotation of the support, motor means connected to the carriers to rotate them in rotational steps of 120 degrees in unison to move each support on the carrier in turn into a position in which a display face thereof is in a display position, wherein with respective display faces on the other carriers, it forms a continuous display surface means associated with each carrier for rotating the support which is being moved out of said display position through 180 degrees about said second axis during that 120 degree rotational step of the carrier, and means for oscillating each of the other two supports rotationally to and fro about their respective second axes during such 120 degree rotational step for providing a clearance between the longitudinal edges of the display faces on the support being rotated through 180 degrees and the longitudinal edges of the display faces on the other two supports.
2. A display device as claimed in claim 1, wherein the rotational position of each of said supports is controlled by cam and follower means.
3. A display device comprising a plurality of rotary carriers mounted for rotation about respective axes which are parallel to each other, each of said carriers having mounted thereon, for rotation about respective second axes which are parallel to and equiangularly spaced about the said axis of rotation of the carriers, three supports each carrying means providing two elongate display faces which are disposed back to back and whose respective lengthwise axes are substantially coincident with the said second axis of rotation of the support, motor means connected to the carriers to rotate them in unison in rotational step of 120 degrees to move, in turn, each support on each carrier into a position in which a display face thereof is in a display position, wherein with respective display faces on the other carriers, it forms a continuous display surface, means associated with each carrier for rotating the support which is moving away from the display position through 180 degrees about said second axis during that 120 degree rotational step of the carrier, and means for disposing the other supports at a greater distance from the first axis during said 120 degree rotational step than during the remainder of each revolution of the other supports.
4. A display device comprising a plurality of rotary carriers mounted for rotation stepwise in unison about respective axes which are parallel to each other, each of said carriers having mounted thereon, for rotation about respective second axes which are parallel to and equiangularly spaced about the said axis of rotation of the carrier, a pluarlity of supports each carrying means providing two elongate display faces which are disposed back to back and the respective lengthwise axes of which are substantially coincident with the said second axis of rotation of the support, wherein, with respective display faces on the other carriers, it forms a continuous display surface, and means for progressively rotating the supports leaving the display position through 180 degrees about their respective second axes, which progressive rotation commences simultaneously with the beginning of the rotational step of the carriers and ends simultaneously with the end of the rotational step of the carriers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000334376A CA1116850A (en) | 1979-08-23 | 1979-08-23 | Display devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000334376A CA1116850A (en) | 1979-08-23 | 1979-08-23 | Display devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1116850A true CA1116850A (en) | 1982-01-26 |
Family
ID=4114992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000334376A Expired CA1116850A (en) | 1979-08-23 | 1979-08-23 | Display devices |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1116850A (en) |
-
1979
- 1979-08-23 CA CA000334376A patent/CA1116850A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |