US2191024A - Air conditioned canopy for beds - Google Patents

Air conditioned canopy for beds Download PDF

Info

Publication number
US2191024A
US2191024A US202303A US20230338A US2191024A US 2191024 A US2191024 A US 2191024A US 202303 A US202303 A US 202303A US 20230338 A US20230338 A US 20230338A US 2191024 A US2191024 A US 2191024A
Authority
US
United States
Prior art keywords
canopy
bed
rail
posts
post
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US202303A
Inventor
Clifford C Matheny
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US202303A priority Critical patent/US2191024A/en
Application granted granted Critical
Publication of US2191024A publication Critical patent/US2191024A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G10/00Treatment rooms or enclosures for medical purposes
    • A61G10/04Oxygen tents ; Oxygen hoods
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00General characteristics of the apparatus
    • A61M2205/36General characteristics of the apparatus related to heating or cooling
    • A61M2205/3606General characteristics of the apparatus related to heating or cooling cooled

Definitions

  • This invention relates to a means whereby the occupant of a bed can be kept at an approximate predetermined temperature without the annoyance and discomfort due to close contact with and support of the bed coverings.
  • An object of the present invention is to provide a canopy of new and novel construction for use either in the home or in hospitals, which forms a complete housing for the body of the person on the bed and at the same time relieves the body from. the weight of the covering.
  • a still further object is to provide a canopy which, when not in use can be folded back out of the way at the foot of the bed so as to be inconspicuous,
  • Figure l is a side elevation of a bed equipped with the present improvement, the fabric of the canopy being in section and the electrical connections being shown in diagram.
  • Figure 2 is 'an elevation of the foot of a bed equipped with the present improvement.
  • Figure 3 is an enlarged section through one side portion of the canopy frame and the engaged portion of the bed frame, said section being taken on the line 33, Figure 1.
  • Figure 4 is an enlarged transverse section through one of the fixed forked posts and show frame in engagement therewith.
  • Figure 5 is a section on line 5-5, Figure 4.
  • Figure 7 is an elevation of the latch portion shown in Figure 6.
  • Figure 8 is an enlarged section through one of the bows of the canopy frame taken on the line 8---i, Figure 2, and showing a clamp for holding the canopy fabric to the bow.
  • Figure 9 is an enlarged section on line 99, 2, through the end cross bar of the canopy frame showing a means for holding the canopy fabric thereto.
  • a pair of posts 5 and 2 are located at each side of the bed, these posts lapping the side rail and being held thereto by clamping bolts 3 engaging straps 4 which are mounted on the inner side of the rail as shown particularly in Figure 3.
  • Post i of each pair is much. shorter than post 2 and merges into a canopy frame member or rail 5 which extends to and is fixedly joined to an intermediate portion of the post 2 so that the two posts and'the rail 5 thus form a. rigid structure. It is to be understood of course that one of these structures is located at each side of the bed.
  • pivot pin 8 connects the members of the iorl: and mounted on this pin for swinging movement are the side arms 9 of a bow Ill which extends throughout the width of the bed and, as it is pivotally mounted in each of the two posts 2, it is capable of swinging into and out of an upstanding position.
  • a supplemental bow H is pivotally connecte at 12 to the sides of the bow l0 and is adjustably supported by cords or chains I3 which connect the side portions of the supplemental bow I I to the side portions of the main bow I0.
  • a carriage i4 is mounted to travel along each rail 5 and comprises side strips I5 having rollers I6 interposed therebetween and connected thereto, these rollers being adapted to travel upon the upper and lower portions respectively of the rail 5.
  • the side strips I5 of the carriage which are suitably connected, as by means of the bearing pins I! on whichthe rollers are mounted, have their upper ends spaced apart to form.
  • a fork I8 constructed similarly to the forked upper end of post 2. That is to say this fork has its side members provided with inner recesses corresponding to the recesses ii while the edges are flared to form deflecting flanges similar to those shown at I in Figure 5. These flared flanges have been indicated at I9.
  • a pivot pin (it connects the side members of the forked upper end of each carriage I4 and these pivots engage the side portions of a main how 2! the free ends of which are enlarged to form flat disk-like terminals 22 adapted to snap into and out of position within the forked portion of carriage M so as thus to maintain the bow either in an upstanding position as shown in Figure l or to allow it to swing freely into collapsed position as hereinafter explained.
  • Tubular side arms 22 are pivotallyconnected to the main bow 2i and are also adjustably joined thereto by cords or chains 23. The pivots of these arms have been indicated at 24.
  • Each of these tubular arms is slidably engaged by the sides of a supplemental bow 25 and as these sides telescope into the tubular arms, the supplemental bow can be adjusted toward or from the main bow 25 as will be obvious
  • a latch lever 26 is pivotally connected to the carriage, the pivot pin 2i] being used preferably for that purpose.
  • This latch has its free end portion bowed transversely as indicated at 2'1?
  • this bowed portion has a stud 28 extending inwardly therefrom for engaging in an aperture 23 formed in the upper portion of the post i.
  • a spring 3b connects the latch lever to the carriage so as to cause its free end to bind firmly against post i under normal conditions.
  • a casing 3I is suitably supported under the bed and joined thereto. It is intended. that this casing hold an electrically driven blower and an electric heating unit and the casing has an outlet flue 32 extending upwardly therefrom between the foot-board F and the mattress M of the bed, this flue being open at its upper end and carrying a foot-rail On this foot-rail are spring clips 34.
  • An air filter indicated generally at 35 is arranged at the inlet or bottom end of the casing 3i and has an inlet flue 36 leading thereto. This fine can have its intake opening at any suitable point. In the structure shown this intake open ing has been indicated at 31 in the foot-board of the bed. It is to be understood, however, that it can be placed at any other point desired.
  • Thefabric constituting the cover portion of the canopy has been indicated at 358.
  • This can be of a light, closely woven material.
  • the material can be slightly porous or could be rendered airtight by rubberizing it or otherwise treating the same.
  • the fabric is soproportioned as to extend completely over the main and supplemental bows and to extend close to and below the side rails B.
  • One end of the fabric is extended partly around the foot-rail 33 where it is held by the spring clip 34, the said fabric then hanging down below the mattress.
  • the fabric is joined to the main and supplemental bows by screws 38' which extend through the fabric is to be so proportioned as to fall lightly about the neck portion of the person occupying the bed.
  • can be located adjacent to the head of the bed and this can control circuits 42 leading to the motor and heater so that the introduction of air into the space under the canopy and the heating of the air can be under the constant control of the occupant of the bed.
  • the latch levers 25 When it is desired to collapse the canopy, the latch levers 25 are disengaged from the posts I and the carriages i l moved backwardly along the rail 5. Bows It and 2I are then swung down wardly toward the foot F of the bed and the supplemental bows l i are also folded downwardly so that the fabric 38 of the canopy and the bows will thus be supported completely folded upon the foot portion of the bed where it will be inconspicuousand not detract from the appearance of the bed.
  • the entire device can be quickly set up simply by unfolding or elevating themain bows 2I, pulling the carriages I4 toward posts moving latch levers 26 into engagement with posts I and then pulling the canopy fabric 38 so that it will extend the proper length of the bed. This will of course cause the supplemental bows to assume their correct position.
  • a canopy attachment for beds includingspaced pairs of posts, one post of each pair being shorter than the other, a rail connecting the top I of each short post to an intermediate point of the long post of the same pair, means for detachably clamping the posts to the side rails'of a bed, a
  • a canopy attachment for beds including spaced pairs of posts, one post of each pair being shorter than the other, a rail connecting the top of each short post to an intermediate point of ing longer than the other, a rail integral with and connecting the upper end of the short post of each pair to an intermediate portion of the other post of said pair, means for detachably securing the lower ends of the posts to the side rails of a bed, a carriage straddling and extending upwardly from each rail of the attachment, antifriction devices within the carriage for rolling engagement with the upper and lower portions of the rail, a latch lever carried by each carriage for detachable engagement with one of the posts, said lever constituting means for holding the carriage against movement toward the long post of the pair and to brace the carriage in an upstanding position on the rail, and canopy-supporting bows connecting the long posts and the carriages respectively.
  • a canopy attachment for beds including spaced pairs of posts, one post of each pair being longer than the other, a rail integral with and connecting the upper end of the short post of each pair to an intermediate portion of the other post of said pair, means for detachably securing the lower ends of the posts to the side rails of a bed, a carriage straddling and extending upwardly from each rail of the attachment, antifriction devices within the carriage for rolling engagement with the upper and lower portions of the rail, a latch lever constituting means for holding the carriage against movement toward the long post of the pair and to brace the carriage in an upstanding position on the rail, and canopy-supporting bows connecting the long posts and the carriages respectively, said bows being pivotally mounted and said posts and carriages being proportioned to permit swinging movement of the bows onto the bed above one end of the bed rails when the carriages are in one extreme position on the rails of the attachment.

Description

c. c. MATHENY AIR CONDITIONED CANOPY FOR BEDS Filed April-'15; 1938 Feb. 20, 1940.
2 Sheets-Sheet 1 C. CMaZkwz -y INVENTOR.
ATTORNEYS.
Feb; 20, 1940. g, g, ATH 2,191,024
' AIR CONDITIONED CANOPY FOR BEDS I Filed April 15, 1938 2 Sheets-Sheet 2 A TTORNEYS.
Patented Feb. 20, 1940 UNITED stares :eATENT OFFICE 4 Glaims.
' This invention relates to a means whereby the occupant of a bed can be kept at an approximate predetermined temperature without the annoyance and discomfort due to close contact with and support of the bed coverings.
It is a fact well known that the weight of bed coverings interferes with the sleep of many persons and more especially those suffering from certain ailments. Furthermore contact of the coverings with the body is objectionable because of unsanitary conditions resulting from the absorption of .heat and body secretions.
An object of the present invention is to provide a canopy of new and novel construction for use either in the home or in hospitals, which forms a complete housing for the body of the person on the bed and at the same time relieves the body from. the weight of the covering.
A further object is to provide a device of this character which can be applied readily to a bed and has associated with it an air forcing means for directing fresh air, either warmed or cool into the space within the canopy so that the body of user canbe maintained at a desired temperature.
A still further object is to provide a canopy which, when not in use can be folded back out of the way at the foot of the bed so as to be inconspicuous,
With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.
In the accompanying drawings the preferred form of the invention has been shown.
In said drawings Figure l is a side elevation of a bed equipped with the present improvement, the fabric of the canopy being in section and the electrical connections being shown in diagram.
Figure 2 is 'an elevation of the foot of a bed equipped with the present improvement.
Figure 3 is an enlarged section through one side portion of the canopy frame and the engaged portion of the bed frame, said section being taken on the line 33, Figure 1.
Figure 4 is an enlarged transverse section through one of the fixed forked posts and show frame in engagement therewith.
Figure 5 is a section on line 5-5, Figure 4.
Figure 6 is an enlarged section through one of the latches of the canopy frame, said section being taken on the line 6'B, Figure 1.
Figure 7 is an elevation of the latch portion shown in Figure 6.
Figure 8 is an enlarged section through one of the bows of the canopy frame taken on the line 8---i, Figure 2, and showing a clamp for holding the canopy fabric to the bow.
Figure 9 is an enlarged section on line 99, 2, through the end cross bar of the canopy frame showing a means for holding the canopy fabric thereto.
Referring to the figures by characters of reference R designates the side rails of a bed the head of which has been indicated at H while the foot has been indicated at F.
A pair of posts 5 and 2 are located at each side of the bed, these posts lapping the side rail and being held thereto by clamping bolts 3 engaging straps 4 which are mounted on the inner side of the rail as shown particularly in Figure 3. Post i of each pair is much. shorter than post 2 and merges into a canopy frame member or rail 5 which extends to and is fixedly joined to an intermediate portion of the post 2 so that the two posts and'the rail 5 thus form a. rigid structure. It is to be understood of course that one of these structures is located at each side of the bed.
The upper end of post 2 projects well above the rail 5 and its fork, the members of the fork being resilient and formed with central longitudinal recesses 55 and outwardly flared side flanges i. A. pivot pin 8 connects the members of the iorl: and mounted on this pin for swinging movement are the side arms 9 of a bow Ill which extends throughout the width of the bed and, as it is pivotally mounted in each of the two posts 2, it is capable of swinging into and out of an upstanding position. When it is in an upstanding position, the free ends of the bow, which are flattened to form disk-like heads or enlargements t, will snap into the recesses 6 as shown in 5, it being understood that these heads, as they move toward the forked ends of the p will engage the flared portions or flanges l spring the members of the fork apart until the heads become seated in the recesses i. Thus the bow will be supported in an upstanding position until subjected to excessive pressure to cause to swing out of said position. A supplemental bow H is pivotally connecte at 12 to the sides of the bow l0 and is adjustably supported by cords or chains I3 which connect the side portions of the supplemental bow I I to the side portions of the main bow I0.
A carriage i4 is mounted to travel along each rail 5 and comprises side strips I5 having rollers I6 interposed therebetween and connected thereto, these rollers being adapted to travel upon the upper and lower portions respectively of the rail 5. The side strips I5 of the carriage, which are suitably connected, as by means of the bearing pins I! on whichthe rollers are mounted, have their upper ends spaced apart to form. a fork I8 constructed similarly to the forked upper end of post 2. That is to say this fork has its side members provided with inner recesses corresponding to the recesses ii while the edges are flared to form deflecting flanges similar to those shown at I in Figure 5. These flared flanges have been indicated at I9.
A pivot pin (it connects the side members of the forked upper end of each carriage I4 and these pivots engage the side portions of a main how 2! the free ends of which are enlarged to form flat disk-like terminals 22 adapted to snap into and out of position within the forked portion of carriage M so as thus to maintain the bow either in an upstanding position as shown in Figure l or to allow it to swing freely into collapsed position as hereinafter explained.
Tubular side arms 22 are pivotallyconnected to the main bow 2i and are also adjustably joined thereto by cords or chains 23. The pivots of these arms have been indicated at 24. Each of these tubular arms is slidably engaged by the sides of a supplemental bow 25 and as these sides telescope into the tubular arms, the supplemental bow can be adjusted toward or from the main bow 25 as will be obvious For the purpose of properly supporting the carriage 5 in an upstanding position and holding it against movement, a latch lever 26 is pivotally connected to the carriage, the pivot pin 2i] being used preferably for that purpose. This latch has its free end portion bowed transversely as indicated at 2'1? and this bowed portion has a stud 28 extending inwardly therefrom for engaging in an aperture 23 formed in the upper portion of the post i. A spring 3b connects the latch lever to the carriage so as to cause its free end to bind firmly against post i under normal conditions.
A casing 3I is suitably supported under the bed and joined thereto. It is intended. that this casing hold an electrically driven blower and an electric heating unit and the casing has an outlet flue 32 extending upwardly therefrom between the foot-board F and the mattress M of the bed, this flue being open at its upper end and carrying a foot-rail On this foot-rail are spring clips 34. An air filter indicated generally at 35 is arranged at the inlet or bottom end of the casing 3i and has an inlet flue 36 leading thereto. This fine can have its intake opening at any suitable point. In the structure shown this intake open ing has been indicated at 31 in the foot-board of the bed. It is to be understood, however, that it can be placed at any other point desired.
Thefabric constituting the cover portion of the canopy has been indicated at 358. This can be of a light, closely woven material. The material can be slightly porous or could be rendered airtight by rubberizing it or otherwise treating the same. The fabric is soproportioned as to extend completely over the main and supplemental bows and to extend close to and below the side rails B. One end of the fabric is extended partly around the foot-rail 33 where it is held by the spring clip 34, the said fabric then hanging down below the mattress. At suitable points the fabric is joined to the main and supplemental bows by screws 38' which extend through the fabric is to be so proportioned as to fall lightly about the neck portion of the person occupying the bed. A suitable switch 4| can be located adjacent to the head of the bed and this can control circuits 42 leading to the motor and heater so that the introduction of air into the space under the canopy and the heating of the air can be under the constant control of the occupant of the bed.
When the device is set up for use, as shown in Figure 1, it will be apparent that the occupant of the bed will be completely enclosed without, however, supporting the weight of the covering or coming into contact therewith. By operating the blower and the heater fresh air can be directed into the space under the canopy at the desired temperature.
When it is desired to collapse the canopy, the latch levers 25 are disengaged from the posts I and the carriages i l moved backwardly along the rail 5. Bows It and 2I are then swung down wardly toward the foot F of the bed and the supplemental bows l i are also folded downwardly so that the fabric 38 of the canopy and the bows will thus be supported completely folded upon the foot portion of the bed where it will be inconspicuousand not detract from the appearance of the bed.
Obviously the entire device can be quickly set up simply by unfolding or elevating themain bows 2I, pulling the carriages I4 toward posts moving latch levers 26 into engagement with posts I and then pulling the canopy fabric 38 so that it will extend the proper length of the bed. This will of course cause the supplemental bows to assume their correct position.
As before stated these improvements can be used either in the home or in hospitals and are advantageous because they are not only sanitary but also because of the increased comfort they afford the sleepers. I
What is claimed is:
l. A canopy attachment for beds includingspaced pairs of posts, one post of each pair being shorter than the other, a rail connecting the top I of each short post to an intermediate point of the long post of the same pair, means for detachably clamping the posts to the side rails'of a bed, a
carriage extending around and movable along each rail, and canopy supporting bows connecting the long posts and the carriages respectively.
2. A canopy attachment for beds including spaced pairs of posts, one post of each pair being shorter than the other, a rail connecting the top of each short post to an intermediate point of ing longer than the other, a rail integral with and connecting the upper end of the short post of each pair to an intermediate portion of the other post of said pair, means for detachably securing the lower ends of the posts to the side rails of a bed, a carriage straddling and extending upwardly from each rail of the attachment, antifriction devices within the carriage for rolling engagement with the upper and lower portions of the rail, a latch lever carried by each carriage for detachable engagement with one of the posts, said lever constituting means for holding the carriage against movement toward the long post of the pair and to brace the carriage in an upstanding position on the rail, and canopy-supporting bows connecting the long posts and the carriages respectively.
4. A canopy attachment for beds including spaced pairs of posts, one post of each pair being longer than the other, a rail integral with and connecting the upper end of the short post of each pair to an intermediate portion of the other post of said pair, means for detachably securing the lower ends of the posts to the side rails of a bed, a carriage straddling and extending upwardly from each rail of the attachment, antifriction devices within the carriage for rolling engagement with the upper and lower portions of the rail, a latch lever constituting means for holding the carriage against movement toward the long post of the pair and to brace the carriage in an upstanding position on the rail, and canopy-supporting bows connecting the long posts and the carriages respectively, said bows being pivotally mounted and said posts and carriages being proportioned to permit swinging movement of the bows onto the bed above one end of the bed rails when the carriages are in one extreme position on the rails of the attachment.
CLIFFORD C. MATHENY.
US202303A 1938-04-15 1938-04-15 Air conditioned canopy for beds Expired - Lifetime US2191024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US202303A US2191024A (en) 1938-04-15 1938-04-15 Air conditioned canopy for beds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US202303A US2191024A (en) 1938-04-15 1938-04-15 Air conditioned canopy for beds

Publications (1)

Publication Number Publication Date
US2191024A true US2191024A (en) 1940-02-20

Family

ID=22749313

Family Applications (1)

Application Number Title Priority Date Filing Date
US202303A Expired - Lifetime US2191024A (en) 1938-04-15 1938-04-15 Air conditioned canopy for beds

Country Status (1)

Country Link
US (1) US2191024A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2659905A (en) * 1951-07-25 1953-11-24 Michael J Rochford Sunbath tent
WO1982003164A1 (en) * 1981-03-19 1982-09-30 Jose De Andrade Costa Warm circulating air ambient for beds
EP0113149A2 (en) * 1982-12-30 1984-07-11 Francesco Guida Self-controlled system of screening and climatization for beds
US6076206A (en) * 1998-12-04 2000-06-20 Celaya; Timothy A. Medical transport cot collapsible canopy system
WO2004056240A1 (en) * 2002-12-19 2004-07-08 Flavio Castillo Martinez Climatic air-freshener for specific cubic space
WO2009103936A1 (en) * 2008-02-22 2009-08-27 Careful Design Limited A high security, sliding table top, with protecting headboard, therapeutic bed unit
US10967204B1 (en) * 2020-07-02 2021-04-06 SCONE Medical Solutions Inc. Self-contained negative pressure environment device and system
US11813202B1 (en) * 2020-04-14 2023-11-14 Janice McLean CPAP enclosure

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2659905A (en) * 1951-07-25 1953-11-24 Michael J Rochford Sunbath tent
WO1982003164A1 (en) * 1981-03-19 1982-09-30 Jose De Andrade Costa Warm circulating air ambient for beds
EP0113149A2 (en) * 1982-12-30 1984-07-11 Francesco Guida Self-controlled system of screening and climatization for beds
EP0113149A3 (en) * 1982-12-30 1984-08-22 Francesco Guida Self-controlled system of screening and climatization for beds
US6076206A (en) * 1998-12-04 2000-06-20 Celaya; Timothy A. Medical transport cot collapsible canopy system
WO2004056240A1 (en) * 2002-12-19 2004-07-08 Flavio Castillo Martinez Climatic air-freshener for specific cubic space
WO2009103936A1 (en) * 2008-02-22 2009-08-27 Careful Design Limited A high security, sliding table top, with protecting headboard, therapeutic bed unit
US11813202B1 (en) * 2020-04-14 2023-11-14 Janice McLean CPAP enclosure
US10967204B1 (en) * 2020-07-02 2021-04-06 SCONE Medical Solutions Inc. Self-contained negative pressure environment device and system
US11400321B2 (en) 2020-07-02 2022-08-02 SCONE Medical Solutions Inc. Self-contained negative pressure environment device and system

Similar Documents

Publication Publication Date Title
US3713182A (en) Bedclothes elevator and bed warmer
US2191024A (en) Air conditioned canopy for beds
US2359599A (en) Convertible infant carrier
US1941902A (en) Baby carrier
US2735480A (en) Seat and leg rest
US1398253A (en) Folding chair and bed
US2387357A (en) Back rest for beds
US2339159A (en) Beauty parlor chair
US2277406A (en) Bassinet and foot well
US2034369A (en) Compact sun rest
US1921984A (en) Combined sunshade and headrest
US2407786A (en) Combination chair and cot
US1758721A (en) Convertible chair and folding bed
US904587A (en) Invalid's bed.
US2551388A (en) Supporting device
US826332A (en) Combined crib and chair for infants.
US1858657A (en) Bed
US2659905A (en) Sunbath tent
US2225999A (en) Collapsible carriage
US2674751A (en) Bed attachment for bed covers
US2855025A (en) Folding chair-cot
US1574696A (en) Bed
US2036455A (en) Casket truck
US200504A (en) Improvement in pillows
US599850A (en) Head-rest