[Nhcoll-l] Self-levelling trolley - am I looking for a unicorn?!
John E Simmons
simmons.johne at gmail.com
Tue May 2 15:39:39 EDT 2023
When doing a major move of a fluid-preserved collection at the University
of Kansas Biodiversity Institute many years ago, the then ichthyology
collection manager Kate Shaw and I purchased good quality,
pneumatic-wheeled carts, which had a lip around the shelves to prevent jars
from sliding off. These carts were much easier to move and greatly reduced
vibrations, particularly for containers we had to move from one building to
another. What is important is to get a cart with quality tires. We used a
bicycle tire pump to adjust the tire pressure when the load weight changed.
The problem with solid wheels is that they transmit vibrations directly
through the cart to the containers, which plays havoc with seals and causes
excessive movement of specimens within the containers--quality pneumatic
wheels will greatly reduce this. It is important to do regular checks of
the pressure in pneumatic wheels and adjust as necessary, but this is a
small price to pay for much smoother ride for the specimen containers.
Going back to the *original question* that provoked this discussion, I
suspect that what was meant by "self-leveling trolly" is not a cart with an
adjustable bed, but rather one that maintains the bed level while moving up
or down a slope. I have seen such cats in the past (although never in a
museum), but they were large and expensive, and I cannot find a current
source for one now. This raises the question of* how steep the ramp is*
that the carts will need to move up and down, and what are the concerns
about using the ramp? Is it the weight of the load to be pushed up and
down, or how the tilt of the cart will affect the container seals? If the
containers are properly sealed you should be able to move them up a slope
without a problem, unless the angle is very steep. Or is there some other
concern?
--John
John E. Simmons
Writer and Museum Consultant
Museologica
*and*
Associate Curator of Collections
Earth and Mineral Science Museum & Art Gallery
Penn State University
*and*
Investigador Asociado, Departamento de Ornitologia
Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Lima
On Tue, May 2, 2023 at 3:23 PM Dirk Neumann <d.neumann at leibniz-lib.de>
wrote:
> Hi all,
>
> can echo bad results with air filled tires: we replaced the hard rubber
> wheels at our cart with air-filled tires, but it turned out that these are
> less favourable when die cart is fully loaded with heavy jars (and the cart
> eventually stays loaded for 2-3 days): even though well pressured, the
> tires slightly deformed and started bouncing when the cart was moved.
>
> After 3-4 weeks, we replaced them again. But maybe there are better
> air-filled tires then those I got from an DIY.
>
> With best wishes
> Dirk
>
>
>
> Am 01.05.2023 um 14:59 schrieb Rob Robins:
>
> For service in the move of the Florida Museum fluid collections and daily
> use beyond the move, we purchased ten carts with pneumatic tires. Both
> types had to be assembled -- easy to do, especially assembly line style.
>
> This model from ULINE has performed very well:
>
>
> https://www.uline.com/Product/Detail/H-2505GR/Utility-Carts/Uline-Utility-Cart-with-Pneumatic-Wheels-45-x-25-x-37-Gray
>
>
> <https://www.uline.com/Product/Detail/H-2505GR/Utility-Carts/Uline-Utility-Cart-with-Pneumatic-Wheels-45-x-25-x-37-Gray>
> Uline Utility Cart with Pneumatic Wheels - 45 x 25 x 37
> <https://www.uline.com/Product/Detail/H-2505GR/Utility-Carts/Uline-Utility-Cart-with-Pneumatic-Wheels-45-x-25-x-37-Gray>
> Easy rolling wheels for smooth rides over rough surfaces. Sturdy
> structural foam. 8" pneumatic casters: 2 swivel, 2 rigid. 2 5/8" deep trays
> are 19" apart. Utility Cart Accessories available.ULINE offers over 41,000
> boxes, plastic poly bags, mailing tubes, warehouse supplies and bubble wrap
> for your storage, packaging, or shipping supplies.
> www.uline.com
>
> The tires hold air nicely; stay inflated months at a time at good pressure.
>
>
> The other model we purchased is this one:
>
>
>
> https://www.globalindustrial.com/p/industrial-plastic-3-tray-black-shelf-service-utility-cart-44-x-25-1-2-8-pneumatic?PicGroupKey=3661
>
> <https://www.globalindustrial.com/p/industrial-plastic-3-tray-black-shelf-service-utility-cart-44-x-25-1-2-8-pneumatic?PicGroupKey=3661>
> Global Industrial™ Tray Top Utility Cart w/3 Shelves, 44"L x
> 25-1/2"W x 35-1/2"H, Black
> <https://www.globalindustrial.com/p/industrial-plastic-3-tray-black-shelf-service-utility-cart-44-x-25-1-2-8-pneumatic?PicGroupKey=3661>
> Global Industrial™ Tray Top Utility Cart w/3 Shelves, 44"L x
> 25-1/2"W x 35-1/2"H, Black. Ships in One Business Day. Buy it and
> Save at GlobalIndustrial.com
> www.globalindustrial.com
> One tire came with a faulty tube; the amount of effort I have put in to
> replace it is out of all proportion -- and I can't recommend the cart with
> pneumatic tires as a result. Also, the customer support from the vendor
> was, well, less than zero -- long online chats with multiple persons who
> could not so much as name the replacement tube or even wheel so that I
> might simply purchase a new one.
>
> Eventually after patching the faulty tube -- and having it fail -- and
> after much searching for replacement tubes or even tires, replacement tubes
> were purchased from....Amazon.
>
> Best wishes,
>
> Rob
> ------------------------------
> *From:* Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu>
> <nhcoll-l-bounces at mailman.yale.edu> on behalf of Anderson, Gretchen
> <AndersonG at CarnegieMNH.Org> <AndersonG at CarnegieMNH.Org>
> *Sent:* Friday, April 28, 2023 5:36 PM
> *To:* Elizabeth Wommack <ewommack at uwyo.edu> <ewommack at uwyo.edu>;
> Callomon, Paul <prc44 at drexel.edu> <prc44 at drexel.edu>; Bentley, Andrew
> Charles <abentley at ku.edu> <abentley at ku.edu>; Claire Smith
> <claire.smith at reading.ac.uk> <claire.smith at reading.ac.uk>;
> nhcoll-l at mailman.yale.edu <nhcoll-l at mailman.yale.edu>
> <nhcoll-l at mailman.yale.edu>
> *Subject:* Re: [Nhcoll-l] Self-levelling trolley - am I looking for a
> unicorn?!
>
> *[External Email]*
>
> A gardening cart! That is a great idea.
>
>
> Gretchen
>
>
>
> *From:* Elizabeth Wommack <ewommack at uwyo.edu> <ewommack at uwyo.edu>
> *Sent:* Friday, April 28, 2023 5:34 PM
> *To:* Anderson, Gretchen <AndersonG at CarnegieMNH.Org>
> <AndersonG at CarnegieMNH.Org>; Callomon,Paul <prc44 at drexel.edu>
> <prc44 at drexel.edu>; Bentley, Andrew Charles <abentley at ku.edu>
> <abentley at ku.edu>; Claire Smith <claire.smith at reading.ac.uk>
> <claire.smith at reading.ac.uk>; nhcoll-l at mailman.yale.edu
> *Subject:* Re: Self-levelling trolley - am I looking for a unicorn?!
>
>
>
> CAUTION: This email originated from outside of the organization. Do not
> click links or open attachments unless you recognize the sender and know
> the content is safe.
>
> Hi Gretchen,
>
>
>
> Some of our ichthyology labs had a big gardening cart with the large tiers
> which they took into the field. They let me borrow it once for moving
> material between buildings and it was lovely. The directional handle was
> really fine control as well.
>
> I think our chemistry stock room has one they use now to make deliveries.
> If you want I can try and get a picture of the brand.
>
>
>
> cheers,
>
> Beth
>
>
>
> Elizabeth Wommack, PhD
>
> Curator and Collections Manager of Vertebrates
> University of Wyoming Museum of Vertebrates
>
> Berry Biodiversity Conservation Center
>
> University of Wyoming,
> Laramie, WY 82071
> ewommack@ <ewommack at berkeley.edu>uwyo.edu
>
> pronouns: she, her, herself
>
> www.uwymv.org
>
> UWYMV Collection Use Policy
> <https://drive.google.com/file/d/1zH0_rDHQmerM4ZU7k2wu8UmRha6aC1Yo/view?usp=share_link>
>
> ------------------------------
>
> *From:* Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> on behalf of
> Anderson, Gretchen <AndersonG at CarnegieMNH.Org>
> *Sent:* Thursday, April 27, 2023 2:39 PM
> *To:* Callomon,Paul <prc44 at drexel.edu>; Bentley, Andrew Charles <
> abentley at ku.edu>; Claire Smith <claire.smith at reading.ac.uk>;
> nhcoll-l at mailman.yale.edu <nhcoll-l at mailman.yale.edu>
> *Subject:* Re: [Nhcoll-l] Self-levelling trolley - am I looking for a
> unicorn?!
>
>
>
> ◆ This message was sent from a non-UWYO address. Please exercise caution
> when clicking links or opening attachments from external sources.
>
>
>
> Claire,
>
> I agree with both Andy and Paul. The balloon /pneumatic tires are a good
> idea. They would absorb vibrations on the floor. At Science Museum of
> Minnesota we used heavy milk carton crates, padded with ethafoam to move
> many of our fluid collections in gallon jars. As I remember (it was a few
> years ago) we used our regular carts with lips on them to move the smaller
> jars, often packed in boxes with dividers.
>
>
>
> How steep is the ramp? That might determine if you need to get more
> complicated.
>
>
>
> Gretchen Anderson
>
> (She/her)
>
> Conservator
>
> Carnegie Museum of Minnesota
>
>
>
>
>
> *From:* Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> *On Behalf Of *
> Callomon,Paul
> *Sent:* Thursday, April 27, 2023 1:00 PM
> *To:* Bentley, Andrew Charles <abentley at ku.edu>; Claire Smith <
> claire.smith at reading.ac.uk>; nhcoll-l at mailman.yale.edu
> *Subject:* Re: [Nhcoll-l] Self-levelling trolley - am I looking for a
> unicorn?!
>
>
>
> CAUTION: This email originated from outside of the organization. Do not
> click links or open attachments unless you recognize the sender and know
> the content is safe.
>
> I’ve seen wagons with rigid metal sides (like a child’s Radio Flyer truck)
> and large balloon tires for use on uneven surfaces and sand. They could be
> used to move drums and tanks of fluid. You may be able to rent them from a
> site equipment rental place.
>
> e. g.
> https://www.grainger.com/product/GRAINGER-APPROVED-Wagon-Truck-with-Flow-Through-12X312?gucid=N%3AN%3APS%3APaid%3AGGL%3ACSM-2295%3A4P7A1P%3A20501231&gclid=CjwKCAjwuqiiBhBtEiwATgvixICPgT6Drn4xiM5zSyyOPqGPMtk5LzLDd_d8SOKdqcyvr7Bq5Dkh1hoCKqIQAvD_BwE&gclsrc=aw.ds
>
>
>
> Paul Callomon
>
> Collection Manager, Malacology and General Invertebrates
> ------------------------------
>
> *Academy of Natural Sciences of Drexel University*
>
> 1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA
> *prc44 at drexel.edu <prc44 at drexel.edu> Tel 215-405-5096 - Fax 215-299-1170*
>
>
>
>
>
>
>
> *From:* Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> *On Behalf Of *Bentley,
> Andrew Charles
> *Sent:* Thursday, April 27, 2023 12:41 PM
> *To:* Claire Smith <claire.smith at reading.ac.uk>; nhcoll-l at mailman.yale.edu
> *Subject:* Re: [Nhcoll-l] Self-levelling trolley - am I looking for a
> unicorn?!
>
>
>
> *External.*
>
> Claire
>
>
>
> I think you are looking for something like this:
> https://www.southworthproducts.com/en/products/portable-lift-tables/dandy-levelers-self-leveling-portable-lift-tables
> <https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.southworthproducts.com%2fen%2fproducts%2fportable-lift-tables%2fdandy-levelers-self-leveling-portable-lift-tables&c=E,1,szJ1KhTGeJMYNpFuPma7jTBptwDaMN_HzgHEPpqKEPWcdVJukI9q_z8BxsxsDABcowbh_DHr6UizjFjQVU0s0EchdXPFWOhiO9JS1EqoQW6A60k1&typo=1>
> .
>
>
>
> I have never used one before but just looking at it I would not think it
> would be safe for transporting fluid materials unless you could find one
> with a lip that would prevent materials from falling off. Depending on the
> grade of your ramp, I would not think it would be too unsafe to use a
> regular low level cart and place all jars into crates or boxes and secure
> them to the cart.
>
>
>
> If you really need one of these, there are lots of different suppliers who
> make these in various sizes but none are cheap.
>
>
>
> Hope that helps
>
>
>
> Andy
>
>
>
> A : A : A :
> }<(((_°>.,.,.,.}<(((_°>.,.,.,.}<(((_°>
> V V V
> Andy Bentley
> Ichthyology Collection Manager/Specify Usability Lead
> University of Kansas
> Natural History Museum & Biodiversity Research Center
> Dyche Hall
> 1345 Jayhawk Boulevard
> Lawrence, KS, 66045-7593
> USA
>
> Tel: (785) 864-3863
> Fax: (785) 864-5335
> Email: ABentley at ku.edu
> <https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fmail.ku.edu%2fowa%2fredir.aspx%3fC%3ddc73cada03f64a4395985d76c0587253%26URL%3dhttp%253a%252f%252fABentley%2540ku.edu&c=E,1,lr0mafdrjtziReb1ES8xBD8uxqS0QkjjdDUKW7w4HybEUq4Ayaa91blQJaDxLzjOWlmHnWks2mIYGknXKQkBvs55W6-SYF-Sh1VNAJtif_CsYw,,&typo=1>
>
>
> A : A : A :
> }<(((_°>.,.,.,.}<(((_°>.,.,.,.}<(((_°>
> V V V
>
> *From:* Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> *On Behalf Of *Claire
> Smith
> *Sent:* Thursday, April 27, 2023 11:33 AM
> *To:* nhcoll-l at mailman.yale.edu
> *Subject:* [Nhcoll-l] Self-levelling trolley - am I looking for a
> unicorn?!
>
>
>
> Hi Everyone,
>
>
>
> We are in the process of moving our fluid collection to a new location, a
> university building is being refurbished for us.
>
> Entry to the building is currently via a sloping fire exit ramp, which is
> not ideal.
>
>
>
> The contractors have told us that we need a “self-levelling trolley”.
>
>
>
> Have any of you heard of such a thing? Have you used one? Could you
> recommend one?
>
> Would it be safe for transporting fluid specimens?
>
>
>
> Yours in confusion,
> Claire
>
>
>
> *******
>
> *Claire Smith *(she/her)
>
> *PhD Candidate: Colour retention in fluid-preserved museum specimens*
>
> *Graduate Teaching Assistant, Cole Museum of Zoology* (Wednesdays)
> c.e.smith at pgr.reading.ac.uk
> claire.smith at reading.ac.uk
> www.twitter.com/wetconservatrix
>
>
>
>
>
>
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>
> *Dirk Neumann*
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> Collection Manager, Hamburg
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